duPont REGISTRY Live presents a highly individualized and unmistakable air-cooled Porsche, a 1991 Porsche 911 Cabriolet (964) transformed with a Rauh-Welt Begriff widebody conversion and period-correct performance upgrades with just over 54,972 original miles. Finished in impeccable Grand Prix White over a factory color-to-sample Magenta full leather interior with a matching cabriolet top, this example combines rare Porsche Exclusive Manufaktur specification with enthusiast-led performance enhancements. Featuring a 3.6-liter flat-six upgraded with an Eaton supercharger, documented service history, original window sticker, and owner’s manuals, this widebody 964 Cabriolet represents a highly distinctive and fastidiously kept interpretation of the air-cooled 911 formula.

The 964 generation marked a pivotal evolution for the Porsche 911, introducing modernized suspension, power steering, ABS, and a more refined 3.6-liter flat-six while retaining the air-cooled soul that defines the marque. This particular 1991 911 Cabriolet 2, finished in impeccable Grand Prix White, takes that foundation and pushes it into far more expressive territory through a widebody conversion by RWB, defined by the legendary Akira Nakai san, which prioritizes visual drama and road presence above everything else.

Power comes from the original matching-numbers 3.6-liter flat-six, enhanced with an Eaton supercharger that adds approximately 100 additional horsepower over stock output (~250 HP). Power is delivered through a C2 rear-wheel-drive layout equipped with a limited-slip differential and the desirable G50 5-speed manual transmission. The combination of forced induction and rear-wheel drive transforms this cabriolet into a far more aggressive machine than its factory specification ever suggested.

 

Visually, the car is defined by its fiberglass widebody fender flares, which dramatically widen the stance and accommodate Kinesis wheels for a purposeful, motorsport-inspired look. Inside, the special-order Magenta full leather interior is in excellent condition, given the age of the vehicle. The Magenta tonneau cover and interior trim further highlight the level of care this car has received throughout its life. The factory Magenta cabriolet top remains original and shows light, honest wear consistent with age, reinforcing the car’s authenticity. Subtle period details, including white piping on the front seats, further reinforce the unmistakably 1990s character of this build, a time when bold specifications and bespoke interiors defined Porsche’s most memorable special-order cars. A Porsche Classic Radio head-unit brings modern convenience in the form of Apple CarPlay, SD Card Reader, Sirius XM, and NAV.

 

Ownership records show multiple prior owners across Texas, Arizona, and Colorado, with AutoCheck indicating six owners over its lifetime. CarFax reports two minor incidents: a rear-end event in 2012 and a front-end incident in 2022. Recent servicing completed in 2025 by Blue Chip Services LLC in Colorado included brake system work, fluid service, battery replacement, belt and tensioner replacement, wheel and tire mounting, and balancing. It is reported that this build was completed for the President of RWB North America and is the only fully smoothed RWB car in the USA. 

Well documented, recently serviced, and offered with its original factory literature, this supercharged widebody 964 Cabriolet occupies a compelling niche for collectors and enthusiasts alike. It delivers rarity, performance, and visual presence in equal measure, standing apart from standard factory cars as a highly usable, high-impact air-cooled Porsche with unmistakable personality.

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Interior

Mechanical

Items Included in Sale