Welcome to the Z. Definitely an interesting project. If you can still get your hands on the rest of the truck the Hemi came out of, I'd go get it and use it as a donor. Other than the motor, trans, and x-fer case; what else did you get? Any of the electronics? Wiring, you're going to need a good wiring diagram. You may be able to buy a service manual from Dodge via http://www.dodge.com
then click on owners and then click on manuals (or something like that).
Keep us informed of the progress, we love reports with pics.
We have a lot of forums for all kinds of topics, so you shouldn't have any problems finding a place to post questions.
We LOVE pics of Rams.
Here's how to post them: http://www.ramforumz.com/forumdisplay.php?f=73