I know this probably shouldn't be here but we haven't had any luck and someone here always knows something about anything.The wife has expressed a desire to ride a motorcycle,more specificaly a trike.That means please build me one.After some internet surfing I found out a car diff shortened works the best and the largest builder of trike kits uses a 6 3/4" ford rear end.Never heard of it.Does anyone here know what could be used in its place or what kind of car they are in? If i find one I'll go get it in one of my TROOPERS (Isuzu content) Thank you