Description: 100% Brand New And High Quality Type：Disc Brake Kit Color：Natural Upgrade your 1964-74 GM A/F/X body vehicle to an 11" disc brake with this kit, improving your vehicle's stopping performance significantly. New 11" vented iron rotor with original 5 on 4-3/4" wheel bolt pattern and 7/16" studs Calipers feature larger 2-3/4" bore from 1969-77 GM midsize cars with 7/16"-20 inlet Includes everything needed to complete install Use with 15" or larger disc brake compatible wheels Professional Installation is Highly Recommended (No Instruction Included) Package Includes: .