OER Parts offers a wide selection of Body Components for your 1966 GMC Truck. OER Parts offers 1966 GMC Truck Mirrors & Assemblies, 1966 GMC Truck Mounting Hardware, 1966 GMC Truck Remote Mirror Parts, 1966 GMC Truck Outer Mirror Mounting Set, 1966 GMC Truck Bullet Mirror Glass, and 1966 GMC Truck Outer Door Mirror Bracket.