Ruf is well established for creating many of the most thrilling sportscars based on the Porsche 911, with this particular example being the only AWD RCT model of the 964 generation.

The car started its life as a wide-body Carrera 4 Anniversary model, a special edition to commemorate the 30 years of the 911, featuring Turbo-body styling, chassis, brakes, suspension with a naturally aspirated 3.6-litre flat six engine.

Alois Ruf Jr, the boss of Ruf Automobile, spotted the car himself and used it to perform a revolutionary conversion at the time, one that would combine a turbocharged 3.6-litre engine with all-wheel drive, a combo that eventually was presented by Porsche later on with the 993 Turbo. The turbocharged flat-six was built in-house and features twin-plug ignition, Motronic engine management and of course a turbocharger. The results are fairly obvious as the engine now makes 385hp, up from the original motor’s 300hp. The gearbox was rebuilt by Ruf which also added a limited-slip differential. Other upgrades include stronger brakes, new suspension, new exhaust system, a electronically controlled AWD system and the iconic 5-spoke 18in Speedline wheels.

The cabin features all the things that distinguish a Ruf from a plain Porsche, meaning the company’s own steering wheel, gauges and pedals. Ruf has produced more than 100 RCT models (which stands for Ruf Carrera Turbo) but this particular example is the only one fitted with the wide Turbo body and all-wheel drive in the world.

Finished in Schwartz Metallic, the paintwork is described to be in stunning condition and the panel fit to be excellent. The same goes for the grey full leather interior which features electrically adjusted comfort seats.

The car remained in a private collection until 2007, when it was sold to a known UK collector and enthusiast. Coming with a complete service history file and supplied with its original German paperwork, this 1993 Ruf 964 RCT is not only a unique opportunity to get a Turbo AWD version of the 964, is also offering genuine value when compared to a regular 964 Turbo.

Silverstone Auctions estimates its price to fall between £120,000 and £140,000 ($156k-$182k in current exchange rates) when it’ll go under the hammer at the 2016 Porsche Sale on October 15th.

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