Can I use WJ rear caliper on my XJ^

I found some WJ calipers and bracket, can it work on the XJ 8.25? I know the WJ disk wont work because of the 5X5.5 bolt pattern, any othe disks combination?

You probably can but you will have to do a lot of work so that the flanges on the axle will match the bolt pattern on the back plate. I brought this up a while back and decided to go to the ZJ rear brakes. I did that just because it required a lot less work. But the end result should be about the same about as with the ZJ or WJ rear calipers. Personally just finished doing WJ brakes in the front and ZJ brakes in the rear, so far I am very impressed.