OER Parts offers a wide selection of Manual Transmissions & Parts for your 1966 GMC G1000 Series. OER Parts offers 1966 GMC G1000 Series Bearings, 1966 GMC G1000 Series Boots, 1966 GMC G1000 Series Complete Transmissions, 1966 GMC G1000 Series Flywheel, 1966 GMC G1000 Series Gaskets, Seals & Filters, 1966 GMC G1000 Series Gears, 1966 GMC G1000 Series Hardware, 1966 GMC G1000 Series Shift Knobs, 1966 GMC G1000 Series Shift Linkage, 1966 GMC G1000 Series OE Shifters, and 1966 GMC G1000 Series Performance Shifters.