Axle ID

Hey guys. I have started this subject in another thread but it has wandered so much I want to get straight to the point. They are out of some sort if wagoneer but the guy I bought them from obviously didn't know exactly.
Things I do know:
- front does NOT have vac disconnect
- front driver drop- wms to wms is 60.5
- rear centered- wms to wms is 58.5
- BOM #s entered on the Dana website tell me they're "grand wagoneer"
- both have 3.31 gears

with these facts can I narrow down what vehicle/year they are out of and are these good for my xj swap?

Those are late FSJ axles. You could do a lot worse, especially for the front. Stock XJ widths are 60.25 front and rear iirc. The biggest thing will be attaching and aligning the control arm mounts. The rear is obviously narrow, but that can be addressed with spacers.

Oh, and search is your best friend.