Chuck, what makes you think it's the steering box? Is it leaking, squealing, etc.? Have you checked all the bushings on the front end of your TJ? How much lift are you running and are you running short or long arms? I know my XJ wandered and jolted side to side really bad with 4.5" of lift and short arms due to the angles. I ended up going drop brackets rather than long arms, which helped a ton. Have you checked ball joints, wheel bearings, steering dampener? What I would do is have the wife or one of the kids cycle the steering wheel while you look underneath for slop in some of the components. I replaced the steering box on my TJ, but I had someone else turning the wheel side to side while I checked things. I found that the pitman arm was moving up and down along with side to side and that the shaft it was supposed to be tight on was stripped so I had play. I don't remember what steering you have on your TJ and could have some tie rode roll or things along those lines going on also.