We’ve focused on the front suspension upgrades for a 1970 Mustang project car at Motorcity Grind, which was receiving a coilover conversion, a rack-and-pinion conversion, and beefy disc brakes.

Roush’s supercharger kit is described as a limited-run “Launch Edition” that increases the Mustang GT’s 5.0-liter Coyote V8 engine output to a jaw-dropping 810 horsepower and 630 pound ...