Theon Design has been reworking air-cooled Porsche 911s for ten years, and it just marked the anniversary with a new 964-based build that undercuts its own flagship on weight while beating it on power. The company also used the milestone to open a direct line to American buyers.

The British restomod shop unveiled an Oak Green Neo Metallic coupe built for a UK customer, alongside an online configurator for its Theon R, Coupe and Targa models and a new North American concierge service. Both moves give US enthusiasts a far more direct path to commissioning a car than before.

First reported by Autoblog, the anniversary build took 18 months to develop and assemble, with every specification choice made by the owner who commissioned it. Theon Design says the finished car "gives the air-cooled coupe a better power-to-weight ratio than a contemporary 911 GT3 RS."

The new 911 starts life as a 964-generation car. It then gets F1-grade carbon-fiber body panels and interior trim that target a curb weight of around 2,645 pounds, versus many real-world 964s that now tip the scales closer to 3,300 pounds.

Power comes from a naturally aspirated 4.0-liter air-cooled flat-six making 419 horsepower and 322 pound-feet of torque, run through drive-by-wire throttle control with selectable driving modes. Theon quotes a 4.0-second run to 60 mph.

Drive goes through a five-speed G50 manual gearbox, though Theon Design also builds a close-ratio six-speed for customers who want shorter gearing. Stopping power comes from a braking system borrowed from the 993 -generation 911 RS, paired with Tractive semi-active dampers and custom spring rates tuned for this specific chassis.

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