Try Feezle auto wrecking in Enon Valley, PA. They're up by New Castle. You will need the rear brakes for a '65 up B-E body with 10 inchers, or anything from '73 on with 10 inch brakes. The only difference between the brakes from a 7 1/4" rear and the rest is one hole that is not drilled in the backing plate. Hope this helps.
