Roush has been busy working on the Stage 3 Mustang for 2015 and if this video is any indication, it’s going to be something wicked. Atop the 5.0L engine is a 2.3L TVS supercharger that is the key to the transformation from Mustang GT to Roush’s fire-breather. Upgraded fuel injectors, a 75mm pulley for the supercharger, a fuel booster system that utilizes a modified version of their 2011-14 map, and small tweaks here and there combine to punch out a max horsepower reading of 749 RWHP and a max torque reading of nearly 600 ft/lbs through different tunes (those numbers were not on the same pull), all of it on 93 octane pump gas. The body kit is up to individual tastes, but the noise this Roush makes borders on symphonic. That noise, right there, is the exact reason why pumping audio into the cockpit is complete crap. That noise cannot be duplicated by Playstation.

Also, keep in mind this is “Phase 1”. According to Roush, Phase II and Phase III are in the works.