Ford Performance and Roush Performance don’t put their names on aftermarket power numbers lightly, which is what makes this dealer-installed supercharger kit for the 2018 Mustang GT and F-150 worth paying attention to. The kit pushes the Mustang to 700 horsepower and the F-150 to 640, all while keeping the factory warranty fully intact. See exactly what Ford is backing and why it still matters for Coyote-powered owners.