Thats something. I cant imagine how its not making some horrible noises.
You either have some bad cv joints, broken axles, or the ring and pinion/spider gears are gone. Very interested in knowing what the inside of the diff looks like.
You sure you ever had 4wd?
1994 ZJ-I6 w/216,000 mi
1998 ZJ 5.9 w/65,155 mi Slate Black
2004 KJ w/90,300 mi