The ROUSH P-51A is easily the highest horsepower Mustang that the company has ever produced, and represents the first time that internal engine components have been upgraded by ROUSH technicians in their Livonia, Mich., facility.

The jig is up

The new Roush P-51A is inspired by the WWII P-51 Mustang, the aviation kind that is. These planes escorted allied bombers over Europe and Hermann Goering supposedly said: "The day I saw P-51 Mustangs flying over Berlin, I knew the jig was up."

Roush blows the rest of the Mustang tuners out of the waters with this 510 hp with 510 lb-ft torque (approximately 690 Nm) Mustang. Jack Roush: "This is the type of product that ROUSH has wanted to produce for at least 10 years but the right platform, the right technology, and the right timing never intersected until now."

Roush has redone the 4.6 liter engine entirely with new forged steel eight-bolt crankshaft, forged aluminum pistons with increased dish to lower the compression from 9:8 to 8:6, and forged steel H-Beam connecting rods. These parts are vital for the engine (300 hp factory spec) to be able to cope with the newest Roushcharger. Additionally new aluminium upper and lower intake manifold, custom fuel rail and high-flow fuel injectors, a high-flow capacity fuel system and a dual electronic throttle body were installed.

The exterior has been fitted with a new aerodynamic package with a new front fascia, chin spoiler, hood scoop, rear spoiler and black high-flow grille. 18 inch forged five spoke wheels are mounted under the car and a Stage 3 suspension kit is fitted. The interior received leather seats, white gauges and the customary emblems.

Production is set to start in the first quarter of 2008 and will be limited to 100 units.

Gallery: Roush P-51A Mustang Debut at SEMA