BEL8500 / 8500 - Application Notes Rear Shock (Each) - (Desired Lowering Amount) 97-00 C2500 / C3500 2WD - Single Rear Wheel - 8 Lug - (2-4”) 90-00 C2500 2WD - Extended / Crew Cab - Single Rear Wheel - 8 Lug - (2-4”) 88-98 C2500 2WD - All Except 8-Lug - (2-4”) 88-98 C2500 2WD - All Except 8-Lug - (5-7”) 97-00 C3500 2WD - Single Rear Wheel - 8 Lug - (2-4”) 97-00 C3500 2WD - Standard / Extended Cab - Including Dually - (2-4”) 97-00 C3500 2WD - Crew Cab - Including Dually (8' Bed) - (2-4”) 92-96 C3500 2WD - Crew Cab - (2-4”) 90-96 C3500 2WD - Extended Cab - Including Dually - (2-4”) 88-89 C3500 2WD - Extended Cab - Including Dually - (2-4”) 75-91 C30 Pickup 2WD - Crew Cab / Dually - (1”) 75-91 C30 Pickup 2WD - Crew Cab / Dually - (4”) 88-98 Chevrolet / GMC C1500 4WD - Standard / Extended Cab - (0-1”)