Singer may have lit the fuse on the modern Porsche 911 restomod movement, but the fire has spread far and wide. Across the Atlantic, a handful of British builders have emerged as serious players in this rarefied art form—and Theon Design is leading that charge. Its latest creation, the result of 18 painstaking months of craftsmanship, may just be the Oxfordshire firm’s finest work yet.

At the heart of this Ice Green Metallic masterpiece is a powerplant worthy of a standing ovation. Theon’s engineers have built an air-cooled, 3.8-liter flat-six that breathes through independent throttle bodies and spins out 407 horsepower at a stratospheric 7,600 rpm. Torque peaks at 293 lb-ft (397 Nm), delivered with the kind of immediacy that only individual throttle butterflies can provide.

Those numbers alone might not scare a modern 911 GT3, which enjoys a roughly 100-hp advantage, but the Theon weighs in at a featherweight 1,150 kilograms (2,535 pounds)—a staggering 312 kilos (688 pounds) lighter than the factory GT3. Add in a five-speed manual and rear-wheel drive, and you’ve got an old-school driving experience distilled to its purest form.

And then there’s the noise. Theon’s adjustable exhaust can whisper through the village or wail like a banshee on a Sunday blast, depending on your mood and proximity to the local constabulary. A semi-active TracTive suspension keeps the car composed no matter how pockmarked the road, while a built-in lift kit spares that sculpted nose from steep driveways and unkind speed bumps. Brakes are lifted straight from the 993-generation Carrera RS, and custom 18-inch wheels wrapped in Michelin Pilot Sport rubber keep the classic silhouette planted and poised.

Every Theon begins as a bare-metal 911 shell. The company reworks and strengthens the chassis with fresh seam welding before clothing it in carbon fiber panels that mirror the original’s curves but shed precious weight. The result, finished here in a shimmering Ice Green Metallic with Polished Eclipse Chrome accents, looks as if it just rolled out of Stuttgart in a better alternate universe.

Inside, the craftsmanship borders on obsessive. Recaro CS seats with carbon fiber backs sit amid a sea of gray Alcantara and bespoke leather. The gauges are reimagined yet familiar, while a stealthy Alpine head unit feeds six Focal speakers—modern sound discreetly hidden in a cabin that still feels gloriously analog.

Of course, exclusivity like this doesn’t come cheap. Theon’s commissions start at £420,000 (about $564,000), and that’s before you even source the donor car. But for the lucky few, this is less about cost and more about curation—about owning a machine that captures the soul of the air-cooled 911 and reimagines it for the modern world.

Singer may have started the movement, but Theon Design proves the symphony of the classic 911 is far from over—and in the right hands, it might even sound better than ever.

Source: Theon Design