I believe the setup is very close to the 1999 models (wj) in which the head unit is a little bigger than a 1din, but the bezel takes up a full double din slot. Just pull it out and see. On most of the jeeps you can do this with nothing more than a putty knife to pry the outside bezel off.
If you need more information on this, go to www.wjjeeps.com, this is the site I have used for all of the information I need for my 2000 jeep. If the pictures look a little different, just try it. That is what this is all about.