ALL NEW 1969-77 mid and full size GM style caliper is a standard full size GM caliper used for years on many vehicles (1969-72 Chevelle, 73-77 A-Body, 1(contact info removed) Camaro, 1977 Caprice, S-10 pickups, etc). It will fit any bracket / spindle designed for the large GM calipers (7” mount width). 7/16"-20 inlet so you can use the readily available brake hoses and hardware from Pre-1978 GM midsize cars. IMCA approved. Fits 1" thick rotor. 2.8" diameter pistons installed. Has 7-1/16" center to center mounting holes. The width between mounting tabs is 2-3/4" Depending on the spindle and rotor size it will not fit in most 14” wheels (nor in 15” drum brake wheels) Item Details All new caliper (not remanufactured) For 1(contact info removed) GM mid and full-size vehicles. IMCA Approved. 7/16"-20 Inlet. 10mm-1.5 bleeder screw. 2.8" diameter pistons. Features & details These all new stock replacement GM calipers were standard equipment on 1969 to 1977 GM mid and full size cars All new components means no core charge to pay and no reused questionable parts These calipers feature a 2.8" single piston and are an IMCA approved replacement caliper 7/16"-20 fluid inlet size allows for use with a variety of adapters or banjo fittings Standard 7-1/16" mount bolt spacing is compatible with many brake caliper brackets when using for a rear disc conversion