Use the body side plate the kit comes with. You will have to re shape the ZJ trans tunnel, and drill the trans tunnel out for the XJ TJ pattern. I re used one or two of the ZJ body bracket holes. Also, I had to modify the body bracket for the shift cable, the angles are different. I think I had to point the body bracket down some with my spud wrench. On the 1995 & older 231's you will have to modify the breather hose. I ended up putting Dynamat over the entire bracket area on the inside to seal & sound proof it. Be prepared to strip your front interior out....seats, carpet, B pillar trim, seat belts.
I did this in Sept or Oct.....zero problems & I've used 4wd a lot. It shifts like butter, no binding, no odd noises, super crisp. I have a'95 ZJ 231 in mine with the factory shift gate & bezel.
Slate 5.9 Limited 8"/ARB/IRO/KOR/OME/231
White 5.9 Limited stock/231/30's
93 ZJ SE-5.9 LTD clone