This brake kit fits 91034906 / 91034908 spindles. For 1964-1972 Chevelle, Lemans, Cutlass and Skylark A-bodies and Camaro/Firebird F-bodies.
The brake kit uses the common metric calipers and 10-1/2" rotors with a 5 on 4-3/4" bolt pattern. Brake kit will not fit stock spindles. Calipers have 7/16"-20 inlets.