It's an easy option if the whole driveline on the Quadratrac CJ was intact and functional.
You gotta swop the whole lot over ie auto box + transfer box, prop shafts, both axles (well just the rear really, but the front must have the same CWP ratio)
Does it have the low range reduction unit fitted? (this looks a bit like a land rover overdrive unit and fits in the same place, but does the oppersite)
If it aint got the reduction unit, you've only got high range, not much use as an off roader.