I thought the HO52 was in 3/4 tons, and the HO72 in one tons? This rear end is a 3/4 ton, so it should work then, correct. Its a decent price, and the guy is pretty good to work with. I think if I help him to pull it, and it wasn't right, that he would work with me on finding one that does. I just want to be right before I go through the effort of pulling it.