Our 13″ drop spindle disc brake conversion kit foryour 1964-72 Chevrolet Chevelle, Malibu and El Caminomuscle car will really improve your stopping performance. This Big Brake kit utilizes C4 Corvette 13″ rotors, dual piston aluminum PBR style calipers with 38mm pistons, T6061 aluminum hubs, 2″ drop spindles and comes standard with drilled, slotted and zinc plated rotors. Improves 60-0 mph stopping distances and driver feedback.