TJ axles will work just need to remove all the four link mounting.
As far as XJ's with 44 rears, 1987 is the only year where they were used mostly. They may have been used in later years but I and a bunch of other people that mess with them I know have never seen one.
Most commonly found in 1987 XJ wagoneers with the towing package.
If you see a woodgrained cherokee with a trailer hitch, stop and look under the back of it. If it's an 87 there's a good chance it'll have a 44.