Well, I found out that NAPA steered me wrong on the brake drums. Tried to fit the drum on my car and the center hole is about 7/16 inch bigger in diameter than the original, and the depth is deeper by 5/32 so it would rub on the backing plate. So scrub the UP64-1074 NAPA drum for the rear of a 66 American. More research to come.... Jay _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list