I just picked up a '73 Blazer and I cannot find brake drums to fit the rear axle. Stock 11x2's don't match. 11 5/32x2 3/4 don't fit either. What came out were 11 5/32x2 3/4 but shallower than everything I've found. The rear axle was replaced by the previous owner, but with what I have no idea. Does any of this sound even vaguely familiar to anyone? By the way this is my first chevy, my first 4wd, my first real "project" truck, so speak slowly, loudly and use small words, please.