I'm sorry for the long post, I'm pretty new here, just got an 90 xj two weeks ago. I'm looking to turn it into a fairly decent trail rig(needed more seats with 3 kids). After looking at what a lot of you have done, I'm pretty sure I need to get rid of the vacuum disco dana 30 and upgrade the rear dana 35. I have a 77 f150 with the dana 44 and 9" combo(my old DD and all purpose rig, it went everywhere, 4wheeling, drag racing, truck pulls, has a 500hp 460) It has 4.10's in the axles and a Detroit in the rear. After looking at the prices for the stuff to upgrade what the jeep has now, I think it would be cheaper to use the Ford stuff. Who has the mounts for the front end etc.? Or do I adapt the Ford radius arm.(I think it would flex more with the radius arm set-up) My buddy has the jig to narrow the rear, so just need the axles shortened and resplined.