Racer Stephen Cox shows how you can improve your 1979-1993 Mustang’s ride, handling and performance with this FOX-BODY MUSTANG ‘CHASSIS’ UPGRADE. Fox body Mustangs (1979-93) have torque boxes for a reason. Ford's sloppy Fox platform literally twists under acceleration and with every turn the driver makes. This “chassis flex” (technically the Fox Mustang is a unit body platform but you get the idea) robs the classic Fox Mustang of cornering power and good handling characteristics. For...