Any Cherokee axle will "fit". For reasons that you should research, some years and axle features are less desirable to have. Stop by the Cherokee section of the Forum and read some of the older threads, there is tons of good info, pointers on maintenance, and deatils about repairs and modifications.
You will probably want to find a donor Cherokee that was made between 1990 and 2001. Make sure the ring and pinion gear ratio in the new axle is the same as the axle you are replacing.
If you are planing on lifting the Cherokee try to avoid getting a 2000 or 2001 front axle.
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