OER Parts offers a wide selection of Performance Ignition Components for your 1966 GMC Truck. OER Parts offers 1966 GMC Truck Coils, 1966 GMC Truck Control Modules, 1966 GMC Truck Distributor Components, 1966 GMC Truck Distributors, 1966 GMC Truck Electronic Ignition Conversion, 1966 GMC Truck Ignition Control 1966 GMC Truck Plugs & Wires, 1966 GMC Truck Stands & Hardware and 1966 GMC Truck Tune Up Parts.