Oh, found this too. Maybe some of it will help ya.
Here's a bit of steering box info. I replaced my stock unit with a new/rebuilt one from Auto Zone and have had to replace it (lifetime warranty) four times. I did some research and found out that pretty much all of the auto parts stores supply the exact same box for our cherokee as they do for S-10 pickups, camaros, and an endless list of other vehicles that were never intended for off road use, let alone abuse. The hot ticket is to get a box from a late 80's - early 90's Camaro/Firebird with the "sport suspension package". It will have a "Z" cast into the side. This is the box the Jeepspeed guys run. It's stronger and has a better ratio too. But you'll have to find it in a junkyard or on ebay cause if you ask for it at the parts store you'll get the same one you'd get if you asked for one for your cherokee!
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