''73 and newer 5 x 4.5" bolt pattern brakes taken from a 7.25" rear will interchange onto a 5 x 4.5" bolt pattern 8.75" rear.

My new 5 x 4.5" bolt pattern 7.25" conversion axles use stock '72 and earlier 9" or 10" A-body drum brake hardware and backing plates. You must re-drill the brake drums or purchase my new 5 x 4.5" bolt pattern drums.