The 1963-1970 Chevy and GMC truck disc brake conversion kits are high quality yet budget priced! You will get all items needed to convert your vintage truck to disc brakes at the wheel. Our Chevy and GMC truck disc brake conversion kits have great features including stock height or 2.5" drop spindles, 5 X 5" or 6 X 5.5" lug rotors and spindles that fit your original ball joints and tie rod ends. These disc brake systems not only upgrade your truck to disc brakes, they use the original ball joints and tie rod ends. Can be used on 71-72 if ball joints are changed to 63-70. Kit includes:12" x 1.250" High Quality Finished Standard RotorsGM D52 Calipers and brake PadsBearings and sealsRubber Brake HosesGrease Caps and spindle NutsYour choice of stock or 2.5" drop spindles. (These kits fit the stock ball joints and tie rod ends! No modification)HardwareLimited Lifetime Warranty Notes:5 Lug Rotors = 5 x 5" Bolt Pattern (1/2"-20 Lug Nuts Required)6 Lug Rotors = 6 x 5.5" Bolt Pattern (7/16"-20 Lug Nuts Required)May not work with factory 15" drum brake wheels. These brake kits set the wheels to the factory GM wheel width for disc brakes. The trac width is approx. 64". Moves wheels out .75" per side when converting from factory drum brakes Fits: Chevrolet / GMC C10 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970