Gunther Werks presented their latest customer car at The Quail gathering, a 400R fitted with their new Sport Touring pack and finished in Chelsea Grey, as well as a gorgeous display of their naked-carbon 993 bodywork.

Instead of backdating an air-cooled 911 and call it a day, Gunther Werks wants to offer the ultimate version of the 993 and the 400R is the rather stunning result.

The company replaces every steel and aluminum panel with their own bespoke carbon items, which not only helps drop the weight figure to 2,677bs (1,214kg) but also gives it a glorious square stance thanks to the wide fenders that look like something Porsche would have made.

“After debuting our project last year at The Quail, A Motorsports Gathering, we received a lot of questions regarding the carbon fiber elements of the vehicle,” said Peter Nam, boss of Gunther Werks. “This year, we decided to bring an exposed carbon exoskeleton straight from our production line to showcase the amount of carbon fiber that adorns each Gunther Werks-transformed 911. We also brought a completed customer vehicle so attendees who weren’t able to stop by our exhibit last year can see the finished product. This particular vehicle features our Sport Touring package.”

As for the new Sport Touring pack option, it includes a new rear ducktail spoiler inspired by the original Porsche 911 2.7 RS, a new intake plenum and more. The finished customer car is also equipped with the company’s lightweight one-piece carbon-fiber buckets that offer custom cushion sizing and density to fit exactly to the body of the 400R’s lucky owner.

Power is provided by a bespoke naturally aspirated 4.0-liter flat-six engine built by Rothsport Racing, producing up to 430hp and 312lb-ft of torque. The powerplant is based on the original 3.6-liter unit found in the 993 Carrera 2 but almost everything is changed or upgraded to make it more powerful and eager to spin at higher revs. The redline is set to 7,800rpm.

Gunther Werks will limit production of the 400R to just 25 examples, with the conversion starting from $525,000, without including of course the price of the donor car.