Yes that's my daily driver that I am doing a resto-mod on. Its basically stock(4.0,AW4,NP231), but it will get a few goodies which include 3.73 gears, a 29 spline 8.25, posi-lock front disconnect, and HD rear springs and a spacer in the front to level it. I already have a HD tranny cooler, tranny temp gauge, and a few other goodies. It runs good enough I don't need headers. I still run the stock manifold in all of my XJ's, I've found that the money is better spent other places. But everyone has a different opinion.
I have 4 XJ's so I wanted one of them to be nearly as stock as I could allow myself to go. This 90 used to be my Dads that he bought brand new, he passed away a few years ago so it is a tribute to him.
Some before and after shots
I also replaced all of the RENIX input/output sensers/devices etc. and the fuel injecters/pump, distributer, pressure regulator, if you can think of it it is new under the hood or under the Jeep.
Here is another shot of the finished motor, I've got 8k on it now, it runs great.