There's been quite a few threads going on this one, including one started by me - I'm planning on doing the conversion in the next few weeks. Here's a useful link for you:

http://www.off-road.com/jeep/swb/articles/dash.htm

basically there are only a few issues that need to be dealt with, namely how to deal with the defroster, etc. There are only a few minor adjustments that need to be made, other than that the dash bolts right on in. Of course there is a mountain of wiring to be done.

regards,
pablo