The Bullit springs were designed for the Bullit Mustangs. They are lower than the stockers and higher spring rate also. Ford had Tokico shocks & struts on it for a matched package. It only lowers a car app 3\4" to 1" lower than stock. They are good springs with the matched shocks & struts. Mach I springs, shocks & struts are comparable to the Bullit pieces.