Hey guys I'm in the process of getting my 8 3/4 rear ready to go into my 73 Roadrunner. I'm rebuilding the 10" rear drum brakes and the drums it came with were shot. I ordered drum's through advance auto and when they arrived they were finned with a larger outside diameter and the originals had no fins. I'm assuming there shouldn't be any issues as I'm using 17" wheels and there should be plenty of room. does anyone know of any other issue's other than the added weight.