BEL548 / 548 - Application Notes 97-00 C3500 Standard / Extended Cab / Dually - (4-5”, 8”) 97-00 C3500 Crew Cab / Dually - 8' Bed - (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.