huh?
I'm no expert here (so I should just probably shut up now)
BUT I know there is plenty of guys running dana30s from jeeps, it's an easier swap, you can basically transform your truck to the front suspension of a jeep. (search notajp, and anybody else in the SAS registry, that is all completed swaps)
If you are really savvy, you can weld up the mounts of a 4 link to a dana 44 (search Jefe dana 44)
or you can swap the early bronco style front axle dana 44 with it's arms etc (like froader, my old 94 limited, stico and several other members)
or go leafs (search rockranger, yomie)
The older jeeps cjs DID have lockouts, but they were possibly a different lug pattern and typically leaf sprung.
Here is what you need to decide and we'll tell you what to look for
full width or stock width?
Dana 30, 44 or 60
what rear setup do you want to match?
coils, leafs, coilovers or airshocks?
you will typically end up with either a front axle with 5x4.5 or 5x5.5, some guys like to change the whole rear axle out, some swear by the 8.8 (like me). Some dana 44s come with 6 lug from a wagoneer, and guys put 5x5.5 knuckles on them.
some guys change rear shafts to match bolt pattern
some guys add rear adapters to convert lug pattern to match
some guys move the front axle forward further
also decide your gears and lockers now and work that into the budget, most likely your new axle will be ready for a full rebuild (unless it's like that jeep axle, a '97 wouldn't be in bad shape, but gear ratio might be wrong)