Boost the power and performance of your 2011 - 2014 5.0L Mustang Phase 2 ROUSHcharger with the ROUSH Performance Phase 2 to Phase 3 Supercharger Upgrade Kit. This kit brings your 625 hp525 lb - ft ROUSH supercharger to a tire - shredding 675 hp and 585 lb - ft of torqueThis upgrade kit offers better performance and added protection to meet the high demands of this much horsepower. To meet the increased fuel demands the ROUSH Fuel Pump Voltage Regulator and Plug - n - Play wiring harness offers are added to help regulate fuel pressure.Installation of this bolt - on kit is quick and easy.