What is the sound of 727 horses at full gallop? In Roush’s P-51 Mustang, the answer is up to you. While there are plenty of performance vehicles that have adjustable exhaust notes, not many can do so via a smartphone app. A couple years ago, Roush introduced an Active Exhaust program for iOS that does exactly that, and it’s featured on Roush’s new 727-hp P-51, its most powerful Mustang yet.
Those who know aircraft history will already have noticed that Roush’s new model is named after a fighter plane, the North American Aviation P-51 Mustang, as founder Jack Roush is an aviation enthusiast.
This P-51’s power comes courtesy of a 2.3-liter TVS supercharger with a stage 2 upgrade bolted to the Ford’s standard 5.0-liter Coyote V-8 engine. In order to keep all that power in check, the P-51 has heavy-duty TrakPak half shafts and three-way adjustable coilovers. Also on hand are performance rotors and pads for the Brembo brakes and 19-inch TrakPak wheels from Weld wearing Continental ExtremeContact Sport tires.
Though it’s still recognizable as the famed pony car, the P-51 has undergone some pretty substantial exterior alterations. It has a new front fascia with bigger upper and lower openings for better air flow, a chin spoiler, a front lower splitter made of carbon fiber, and heat extractors built into the hood. It also has a wide hood scoop, rocker skirts, scoops on the body side and rear windows, and a carbon-fiber decklid spoiler. Some of these pieces have been used on previous Roush customs, but the spoiler, front splitter, custom hood paint, and grille lighting are all specific to this model. The interior has been outfitted with a plethora of badges and plaques, a red Roush ball shift knob, a custom gauge cluster overlay, “bomber-jacket-inspired” Amaretto Tuscany leather, and billet pedals.
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The P-51 costs $42,500—on top of the cost of the Mustang GT itself. Roush is only building 51 examples, but for buyers who are missing out, there’s a Shelby GT500 on the way.
