The ROUSH Stage 1 package for the Mustang GT features a more aggressive appearance thanks to upgraded front and rear fascias, a chin splitter, side rocker splitters, rear valance, and a rear decklid spoiler. Inside, drivers are treated to embroidered floor mats and ROUSH badging.  Buyers of the ROUSH Stage 1 could add a host of optional appearance and handling features, including lowering springs, a brake upgrade, larger wheels, optional white gauges, leather seating, performance pedals, and a short-throw shifter. Power is supplied by the stock 4.6L V8 (2010) and 5.0L Coyote V8 (2011-2014).