GM 10/12 Bolt Rear Disc Brake Conversion Kit, Fits Select 1971-1987 Chevy & GMC 2WD Trucks, 5 x 5 in. Bolt Pattern, Standard Kit w/E-brake, Includes:, Calipers, Brackets, Flanges, Plain Rotors, Brake Hose, E-Brake Cables|JEGS GM 10/12 Bolt Rear Disc Brake Conversion Kit Fits Select 1971-1987 GM C10/C15 Series Trucks, w/5-Lug [Standard Kit w/E-Brake].