BEL582 / 582 - Application Notes 1988 C3500 Extended Cab / Dually - (4-5”, 8”) Notes: - Not designed for diesel applications. - It is highly recommended to use an AirJack - For trucks w/o O.E. front sway bar order adapter kit #5700. - 88-91 must use Alignment Kit #4950. - 88-89 rear axle saddle must be welded inplace.