OER Parts offers a wide selection of Manual Transmissions & Parts for your 1963 GMC 1000 Series. OER Parts offers 1963 GMC 1000 Series Bearings, 1963 GMC 1000 Series Boots, 1963 GMC 1000 Series Complete Transmissions, 1963 GMC 1000 Series Flywheel, 1963 GMC 1000 Series Gaskets, Seals & Filters, 1963 GMC 1000 Series Gears, 1963 GMC 1000 Series Hardware, 1963 GMC 1000 Series Shift Knobs, 1963 GMC 1000 Series Shift Linkage, 1963 GMC 1000 Series OE Shifters, and 1963 GMC 1000 Series Performance Shifters.