1966 GMC 1000 Front: Leaf Rear: Leaf. Notes: Drum Brake Hardware Kit. 1966 GMC 1000 RWD Crew Cab Pickup Front: Coil Rear: Coil. 1966 GMC 1000 RWD Extended Cab Pickup Front: Coil Rear: Coil. 1966 GMC 1000 RWD Extended Crew Cab Pickup Front: Coil Rear: Coil.
