Skyjacker SYS Box 6in 80-96 F150 2WDPrecise engineered 1 piece strut spacers have a specific Pitch and Index' offset to preserve CV extension and to prevent CV axle overextension within the OEM tolerances. A differential skid plate tie the two crossmembers together to create a rigid sub frame and added protection for vital steering and driveline components. This all inclusive kit has front and rear brake line relocation brackets, differential vent tube extension, a CNC machined 6061 T6