Those look like JCR Stage 3 sliders... had the same kind on my Cherokee. I liked them a lot.
one thing I always had in the back of my mind was taking a xj then taking everything that was not needed to make it run and drive and get rid of it making it as light as possible( no body panel glass ect...) with lots of cutting and just enough lift to clear a set of q's add a cage and wheel the crap out of it