Will the backing plates, and drums from a ('77) 9 1/4 work on an ('73) 8 3/4 axle? The 9 1/4 received all new brakes just before it was pulled and buried in the back of the garage. I don't mind tearing down the 9 1/4 to find out, but the 8 3/4 is currently in my wagon, so I don't want to tear it down at the moment. Just curious before the 9 1/4 gets tossed in the scrap pile. Thanks.