A customer-led Sonderwunsch project has turned a low-mileage 911 GT2 RS into a lighter, road-legal Flachbau with visual references to Porsche’s 935/78.
Porsche has revealed one of the most technically ambitious commissions yet from its Sonderwunsch programme: a customer’s 911 GT2 RS has been rebuilt as a unique Flachbau RS. The road-legal project combines a radically altered front profile, bespoke lighting, extensive lightweight work and design references to the 935/78 ‘Moby Dick’, turning an already rare modern GT car into a genuine factory one-off.
A modern interpretation of the slant-nose idea
The defining change is the Flachbau front end, a concept closely associated with Porsche’s 1980s special-order cars and the competition 935. New front wings and very slim LED light units lower the visual nose of the car, while the overall treatment deliberately avoids becoming a literal copy of the historic racing machine.
Porsche designer Grant Larson was involved in the project, giving the commission an unusually direct line to the company’s design history. The result is recognisable as a 991-generation GT2 RS, but the proportions and graphic treatment make it feel like a separate model rather than a car carrying aftermarket bodywork.
Engineering had to match the visual ambition
Porsche says the conversion involved collaboration between Sonderwunsch, Style Porsche, development engineers, Porsche Motorsport and Manthey. The powertrain remained unchanged, but the body and aerodynamic work required proper engineering validation so the finished car could remain legal for road use in Europe.
Lightweight measures removed almost 70 pounds from a car that was already engineered around low mass. That detail is important because the commission was not treated purely as a styling exercise; the project had to preserve the performance integrity and safety standards expected from one of Porsche’s most serious road cars.
The 935/78 influence is deliberately visible
The car is finished in a specially matched Grand Prix White, using a historic Porsche from the company collection as the colour reference. Matte black areas, exposed carbon fibre and a U-shaped graphic on the bonnet echo the visual language of the famous 935/78 without recreating its full racing livery.
At the rear, the wing takes inspiration from the 911 GT3 R rennsport and uses distinctive S-shaped mounts. That mixture of references from different eras shows how Porsche is using its heritage as a design library, allowing an individual customer to commission something new without detaching it from the marque’s history.
Sonderwunsch is becoming a true collector programme
The project took almost three years, which places it closer to coachbuilding than ordinary personalisation. For serious collectors, that depth of factory involvement can matter as much as the rarity of the finished car because the provenance, engineering record and design authorship are all part of its long-term significance.
Porsche’s modern Sonderwunsch programme is increasingly showing that established manufacturers can offer the kind of one-off work once associated mainly with independent coachbuilders. For owners who already have access to standard limited editions, factory-created projects such as this Flachbau provide a different level of individuality.
Official sources: newsroom.porsche.com.
Source
Porsche Newsroom