Okay, If your going with 37's then I would look for axle our of either a CJ-7. 86 model year has the dana 44 or a mid 80's grand wagoneer has 44's as well. And I think the drop is on the correct side. 2nd if you do decide you want to run big meants like 40's. Then you want a 14 bolt in the rear and and 60 up front. I would also look into doing a spring over using 1-2" lift springs vs mono leaf by sky jacker, as it would seem one good bounce and they are bent. other things to upgrade or think about:
1. steering setup, pump, etc tire rod drag link
2. brake's.
3. gears, with 37's would say 4.88 as a starting point
4. Lockers, ARB or another selectible
5. Roll cage
6. Longer brake lines
7. While you have the t-case open what about a 4:1 low range gear set?
8. Replace your stock spring hangers
Just a few things off the top of my head....
1. steering setup, pump, etc tire rod drag link
2. brake's.
3. gears, with 37's would say 4.88 as a starting point
4. Lockers, ARB or another selectible
5. Roll cage
6. Longer brake lines
7. While you have the t-case open what about a 4:1 low range gear set?
8. Replace your stock spring hangers
Just a few things off the top of my head....