BEL561 / 561 - Application Notes 88-98 C2500 - All (Except 8-Lug) - (3”, 4”) Notes: - For trucks w/o O.E. front sway bar order adapter kit #5700. - Not designed for diesel applications. - 4“ Ext. Cab must use #4981. 6“ Ext. Cab must use #4985 driveline alignment kit.