OER Parts offers a wide selection of Performance Ignition Coils for your 1966 GMC G1000 Series. OER Parts offers 1966 GMC G1000 Series Accel Super Coil, 1966 GMC G1000 Series Accel HEI Remote Super Coil, 1966 GMC G1000 Series MSD Street Fire Coil, 1966 GMC G1000 Series Accel Superstock Ignition Coil, 1966 GMC G1000 Series MSD Blaster 2 Ignition Coil, 1966 GMC G1000 Series MSD Blaster 3 Ignition Coil, 1966 GMC G1000 Series MSD Blaster HVC Ignition Coil, 1966 GMC G1000 Series TSP Power Ignition Coil, and 1966 GMC G1000 Series Pertronix Flame-Thrower Coils.