The Tuthill GT One is a sensational street legal tribute to 1990s Le Mans racing

Last time you heard from British Porsche fettlers Tuthill on TopGear.com, we were bringing you news of its 911K: weighing in at just 850kg, and good for 11,000rpm. A recipe for sports car nirvana that surely couldn’t be topped. Well, Tuthill thought it would have a go all the same.

And here’s what it’s come up with. A supercar called the GT One, clearly inspired in name and look by the Porsche 911 GT1 of 1990s endurance racing fame. This isn’t a racing car, however.

It’s street legal, and for what’s almost certainly a seven-figure sum, you can have one of 22 examples that Tuthill plans to make. But there are critical choices you must make.

Do you want a seven-speed twin-clutch gearbox, or a six-speed manual? A 4.0-litre naturally aspirated flat-six related to the 911K’s screaming engine, that develops around 500bhp? Or a twin-turbo version that kicks out more than 600bhp?

There are of course supercars with three times the power also challenging for your money, but the GT One is light. Thanks to an all-carbon fibre body and carbon ceramic brakes with bespoke calipers, it’s claimed to weigh only 1,200kg. Less than a Boxster, with the power of a 911 Turbo, in other words.

Tuthill says the GT One was born out of a chat between company boss Richard Tuthill and one of his clients, Elliot Ross. What would a modern-day GT1 car look and drive like? Can it still be pretty while incorporating FIA-spec crash-worthiness and road legal measures? Apparently so. Very much so.

Tuthill says it’s considering offering an ‘aero pack’ for track use. No word on projected lap times, nor any quantifiable performance data, or price just yet – more as we have it. For now, just drink in those low-drag proportions and the motorsport-chic purposefulness of the GT One.

Does this now rank alongside or beyond Singer et all in the quest to build the ultimate Porsche 911-based road car?