OER Parts offers a wide selection of Brake Components for your 1966 GMC G1000 Series. OER Parts offers 1966 GMC G1000 Series Calipers, 1966 GMC G1000 Series OE Calipers, 1966 GMC G1000 Series Performance Calipers, 1966 GMC G1000 Series Front Calipers, 1966 GMC G1000 Series Rear Calipers, 1966 GMC G1000 Series Anodized Calipers, 1966 GMC G1000 Series Powder Coated Calipers, 1966 GMC G1000 Series Wilwood Calipers, 1966 GMC G1000 Series 4-Piston Calipers, 1966 GMC G1000 Series Aluminum Calipers, and 1966 GMC G1000 Series Cast Iron Calipers.