Last time Tuthill made headlines on TopGear.com, it was with the 911K—a featherweight 850 kg sports car capable of screaming to an eye-watering 11,000 rpm. A tough act to follow, no doubt. But Tuthill, never one to rest on its laurels, has now upped the ante with the GT One.

Inspired by the legendary Porsche 911 GT1 from the golden era of endurance racing, the GT One is not a track-only beast. No, this supercar is fully street legal, designed to make your daily commute feel like a lap of La Sarthe. But, as with all things extraordinary, there are decisions to be made.

First, the gearbox: do you opt for the seven-speed twin-clutch transmission, or do you embrace the purist’s choice, a six-speed manual? Then there’s the engine. Will it be the 4.0-liter naturally aspirated flat-six—related to the 911K’s howling heart—pushing out a potent 373 kW (500 hp)? Or do you dare to go for the twin-turbocharged variant, delivering a face-melting 447 kW (600 hp)?

Sure, there are supercars out there with three times the power, but raw power isn’t the whole story. The GT One is a study in lightweight engineering. With a body crafted entirely from carbon fibre and stopping power courtesy of carbon ceramic brakes with bespoke calipers, the GT One tips the scales at just 1,200 kg. That’s less than a Boxster, yet with the firepower of a 911 Turbo.

The GT One was born from a conversation between Tuthill boss Richard Tuthill and one of his clients, Elliot Ross. The question on the table: What would a modern-day GT1 car look and drive like? Could it still be breathtakingly beautiful while meeting FIA crash standards and road legal regulations? The GT One is the answer—an emphatic “yes” in carbon and steel.

For the track enthusiasts among you, Tuthill is considering offering an ‘aero pack’ to enhance downforce and handling. While we’re still waiting on hard performance numbers and a price tag, one thing is clear: the GT One is a masterclass in motorsport aesthetics and engineering.

So, does this rank alongside, or perhaps even surpass, the likes of Singer in the quest to create the ultimate Porsche 911-based road car? It just might.