2 types, 1 is the H150 rear end the other bolts to the Borg warner rear, just depends on what diff you have, Borg warner came out on the sedans and some of the wagons, and the H150 came out on the coupe and wagon. hope this helps. the Borg Warner housing unbolts from the back of the diff housing. it's a plate whereas the H150 is a hat removed from the front. easy to see the difference.