There's a huge difference between the TJ/YJ shifter and the XJ/MJ shifter. You'll want the MJ/XJ variety. :thumbsup:
I've been told that the lower shifter part (the piece inside the shifter hole, that the nylon piece sits in, with the arm going to the shift rails) is also different, so you'll need to swap that to an XJ/MJ one too. I haven't personally verified that, but I trust the source.