I've been reading here a bit about the XJ shaft. I've just replaced my steering box and thought I might as well switch over to the XJ shaft while it's down. The XJ shaft will allow me to lose the rag joint and will tighten up the slop, correct? I've got a 91' blazer, so what year XJ shaft do I need and where do I find it? Do I need to pull the column or can I do it all from inside the engine bay? Also, what's the level of difficulty. The steering box was pretty easy. Sorry with all the questions....I'm such a newb.