Will not fit models built before February 9, 1994 due to track bar stud size. Steering stabilizer is required and sold separately. If equipped with rear top mounted overload springs 4 of u-bolt part ZONU4050 are typically required. If truck is equipped with rear brake proportioning valve, proportioning valve relocation bracket kit ZOND5509 is required. If your model has the factory front sway bar links mounted ABOVE the axle bracket, sway bar link kit ZOND5501 is required. If your model has the factory front sway bar links mounted BELOW the axle bracket, no additional sway bar link kit is required. If vehicle is equipped with a factory rear sway bar, optional rear sway bar link kit ZOND5508 is recommended. Models equipped with a 2 piece rear driveshaft and carrier bearing will require optional carrier bearing drop kit ZOND5505