We’ve covered about a half dozen Theon builds since 2024 alone, and the Oxfordshire shop keeps finding new ways to make a 964 feel fresh. Last fall it was an Ice Green car tuned for broken British tarmac. And this summer it was a carbon-bodied coupe that made a modern GT3 look….well, heavy.
For its 10th birthday, Theon went with a deep, old-school green and a gearbox most of its clients pass on. Say hello to the Theon Design Oak Green 911.
Five Gears and No Apologies
Theon’s recent commissions have mostly run a close-ratio six-speed built to 993 RS specs. This car’s owner politely declined and asked for Porsche’s G50 five-speed instead, which happens to be the same call the Ice Green GBR006 made last year.
Ahead of it sits a rebuilt and remapped 4.0-liter air-cooled flat-six making a healthy 419 hp and 322 lb-ft. Drive-by-wire throttle maps include a softer setting for town and slippery roads, and Theon quotes roughly four seconds to 60 mph.
Carbon Underneath, Comfort on Top
Now, we’d be lying if we said the lightweight story was news around here, since Theon’s carbon bodies have headlined nearly every build we’ve covered. This one wears carbon panels, bumpers, and sills, and along with a lighter MIL-spec wiring loom, Theon credits them with trimming about 661 pounds versus a stock 964. And that lands this variant at the same roughly 2,535-pound curb weight as January’s Medium Ivory car.
The rest of the recipe sticks with what works for Theon on home soil. TracTive semi-active dampers, 993 RS-spec brakes, and 17-inch champagne wheels on taller-sidewall Michelin Pilot Sports.
Oak Green, Beechwood, and Zero Screens
The paint is Oak Green Neo Metallic (Theon’s update of a classic Porsche shade), picked out with champagne script and details that match the wheels and calipers. Inside, Beechwood semi-aniline and nubuck leather wrap the cabin, Recaro CS seats hold you in place, and milled aluminum switches handle the windows.
There are no screens anywhere in the cabin either. And for the rest of us, Theon just launched its first online configurator, so daydreaming about your own spec is officially free.
Spec Sheet
Model: Theon Design Porsche 911 (964) Oak Green Commission
Base Vehicle: 964-generation Porsche 911
Engine: Naturally aspirated, air-cooled 4.0L flat-six
Power: 419 hp / 322 lb-ft
Transmission: G50 five-speed manual
Drivetrain: Rear-wheel drive
0-60 MPH: ~4.0 seconds (claimed)
Weight: ~2,535 lb
Bodywork: Carbon fiber panels, bumpers, and sills
Suspension: TracTive semi-active dampers
Brakes: 993 RS-spec
Wheels: 17-inch champagne, Michelin Pilot Sport tires
Build Time: 18 months
Pricing & Availability
This particular car is a one-off for a UK client, so it’s spoken for. If you want your own, Theon Coupe commissions start at £435,000 (~$575,000) before the donor car, shipping, and taxes, and US buyers can now work through Humble House’s new concierge service. Head over to Theon Design’s website or its new configurator to start planning.
Recap
Theon Design Porsche 911 (964) Oak Green
Theon celebrates a decade of 964 restomods with a 419-hp, carbon-bodied Oak Green coupe that trades its usual six-speed for Porsche’s G50 five-speed.
