Somebody cobbed up the original 91 11.65" PBR brakes and backing plates onto the moser axle. They drilled an extra set of holes in the backing plates and ran them. I wasn’t really that impressed with it. I really need to have a parking brake because it’s a stick shift car. I do have a complete axle out of a 98 SS under my 88 IROC that won’t be going anywhere for a long time so I could steal the brakes off that. I have to pull the axle out from under the car anyway to rebuid the center section since I need to replace the spool with a limited slip. I’m going to look into the rear brake situation then.