Lanzante is building this special version of the P1 with a sporty new bodywork.

After teasing its creation of a P1 GT Longtail in early June, the McLaren specialists at Lanzante are now revealing the overhauled hypercar's debut at the Goodwood Festival of Speed that runs from July 12 to 15. The machine's wild body takes inspiration from the F1 GT – the road-going version of the F1 GTR Longtail race car.

The P1 GT Is Here:

 

Details about the P1 GT remain scant. The images of the body reveal vented front fender and massive splitter. The roof-mounted intake appears slightly larger. To fit the longtail moniker, the rear section of the bodywork seems to extend farther behind the huge wing. The engine is also a mystery, but Lanzante can already tune the hybrid 3.8-liter biturbo V8 to pump out 986-horsepower (725-kilowatt), so ample power should be available.

McLaren P1 GT Longtail Lanzante

A wealthy customer from the Middle East reportedly commissioned the P1 GT. Lanzante might be willing to build two more to match its production with the three examples of the original F1 GT.

Lanzante is well acquainted with creating special McLarens. Among the firm's more recent work is doing road-legal conversions of the P1 GTR and building the 986-hp (735-kW) P1 LM. 

If you don't have a P1 to donate for this conversion, McLaren has its own new longtail model on the way with the recently unveiled 600LT. Starting with the 570S, the company bumps the output to 592 hp (442 kW) and 457 lb-ft (620 Nm) – instead of 562 hp (419 kW) and 443 lb-ft (600 Nm) in stock form. In addition, the weight can fall by as much as 211.6 pounds (95.98 kilograms) with all the optional pieces from McLaren Special Operations like a carbon fiber roof and vented fenders. With all of these parts, the 600LT weighs 2,749 pounds (1,247 kg). On the outside, the modified body is  2.9 inches (7.3 centimeters) longer than a 570S.

Source: The Real Lanzante via Instagram