As the ‘991’ family of Porsche 911s draws its last breath, the tuners are pulling out all the stops. Every last one of them. The ‘old’ 911 is not going to die quietly.

Porsche specialists TechArt have applied their very own blend of well, tech and art to the soon-to-die 911 Turbo S, and the result is the GTstreet RS. The specs are enough to make even the mighty GT2 RS cower in fear.

New turbos for the 3.8-litre flat-six pump power from 572bhp to an astonishing 759bhp. When it left the Porsche factory, the engine made 553lb ft of torque. After it leaves TechArt’s workshop, you’re looking at 921Nm.

Even with clever four-wheel-drive and one of the fastest gearboxes in the business, you won’t notice the difference going from 0-100kph. That takes a whole 2.5 seconds – a mere 0.4sec quicker than Porsche’s claim for the standard car and only 0.1sec faster than Top Gear timed one.

No, you need to keep your foot down. Aim higher. Launch from 0-201kph and the TechArt will get you there in just 8.1 seconds. That’s 1.1 seconds ahead of a flat-out standard 911 Turbo S. And the gap will keep getting bigger. The top speed? A shade over 340kph.

The most interesting part of the carbon-overload body kit are the new aero-wheels. The company explains: “Aero rings in forged-design carbon protect the brake system from stone-chipping and reduce air turbulence on the wheels.”

The other headline mod is swathing the cabin in “luxurious virgin wool combined with leather and Alcantara”. Sounds opulent. And there’s more, because TechArt reckons its upholstery is “particularly hard-wearing and flame-retardant”.

Only ten examples will be made, for an undisclosed fee.

Get ‘em while they’re hot.