We’ve seen some drool-inducting classic cars come up for sale from time to time, but this one just about takes the cake.

It’s a Porsche 911, as you can see – but not just any old 911. This is a 1974 Carrera RSR 2.1 Turbo, the first production-based turbocharged Porsche to race at Le Mans.

It was one of four prepared for the factory-supported, Martini-sponsored works team that year, with a wing that looks like it could support a jumbo jet and wheel arches wide enough to make a steamroller wince. This car finished second overall at Le Mans that year, and competed at Brands Hatch, Watkins Glen, and Daytona.

Known as R13, it paved the way for so many turbocharged racing Porsches to follow, and has remained in original condition ever since – right down to that classic livery. No wonder that Gooding & Company projects it will sell for a good $7 million (give or take a million) when it crosses the auction block at Amelia Island next month.

“The RSR 2.1 Turbo is truly an integral piece of Porsche’s motor sport legacy and its influence can be seen in the company’s subsequent road and racing models,” said auctioneer David Gooding. “This car set the stage for the iconic Porsche 930 and its racing counterpart, the 934. Turbocharged Porsches, like the 962, dominated endurance racing for years. With the marque celebrating its 70th anniversary this year, Porsche is most definitely in the spotlight and on the minds of collectors.”

Too outlandish for your tastes? There’s a Group 4-spec, light-yellow 934 up for grabs at the same event, valued between $1.2 and 1.6 million. More tempting, though, could be the 962C.

The customer version of the factory-run 962 prototypes, this 962C was leading Le Mans in 1990 until its engine blew just fifteen minutes from the end. Pity, sure, but it’s long since been restored, and presented in its original Repsol livery. It’s estimated to sell for $1.5-2 million at the same event.

Between these three are some compelling options for running at events like the Le Mans Classic or the Rennsport Reunion. Photos by Mathieu Heurtault (RSR), Brian Henniker (934), and Mike Maez (962), courtesy of Gooding & Company.