I have a rear end from a 77 buick Riviera that has disc brakes. It's probably too wide for most hot rods. They didn't work very well in the car and were responsible for the car getting totalled. The guy who crashed it knew they were sticking but he didn't want to mess with them. He thought the front brakes were good enough. The e-brake has mechanical calipers. I'll sell it cheap if anyone wants to do the brake job and use it.