Porsche recently revitalized its Sonderwunsch program with a series of one-off creations. Nevertheless, during its initial tenure, the custom commission department produced significant works, and this 1989 Porsche 928 GT ‘Flachbau’ or ‘Slantnose’ serves as a testament to that legacy.

Going up at auction in Paris, France, this unique 928 underwent modifications by Porsche’s Sonderwunsch — or special wishes — team. This makes it the only factory 928 GT to have been equipped with covered pop-up headlights, rather than the round, stand-up units that others were fitted with.

In addition, it also got the complementary XB2 and XC1 options, which mean that it has both the wider body skirts, and the wider rear wheel arches. And to top it all off, it is equipped with aerodynamically-optimized side mirrors, and deep-dish wheels.

Read: Holy Grail! Rare Porsche 935 Auction Is At $1.3 Million And Counting

This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights

Photos RM Sotherby’s / Dirk de Jager

Not surprisingly, given its unique nature, this dream machine has had only one owner. Over the course of the past 35 years, this individual has taken exceptional care of the vehicle, consistently servicing it at Porsche service centers.

Considering its age, it hasn’t done a whole heck of a lot of driving. The odometer reads just 56,636 km (35,192 miles), but the seller warns that’s not accurate. In 2003, its odometer was replaced at the Porsche Center Saarland. However, at the time, it read just 11,500 km (7,145 miles), so it remains a gently used car.

This 929 ‘Slantnose’ example is a GT model, which means that it was only offered with a manual transmission. It also came equipped with limited luxury options, in order to keep drivers comfortable, while keeping weight low. Finally, the 928 got a slightly more powerful version of Porsche’s 5.0-liter V8, which made 326 hp (243 kW/330 PS), as opposed to the standard car’s 316 hp (235 kW/320 PS).

This 1989 Porsche 928 GT ‘Flachbau’ will be offered for sale at RM Sotheby’s Paris 2024 auction, which runs from January 30-31, 2024. Estimates suggest that it will bring in between $195,000 and $300,000.

This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights
This Is The Only Factory 1989 Porsche 928 GT ‘Slantnose’ With Covered Pop-Up Headlights

Photos RM Sotherby’s / Dirk de Jager