So I've been digging around on some dodge forums looking for the answer to this question. More specifically I was looking for more information about how the PCM connects to a manual transmission. Now, obviously, I don't know a whole lot about the differences between how a manual transmission and an automatic transmission are wired up, and how much the computers interact with them.
It seems to me that the manual transmissions really have zero interaction with the PCM. And there are only a few wires to hookup for reverse tail lights, neutral safety switch, etc...
I'm fairly confident now that I can do this swap successfully. Ill be starting a build thread in the grand cherokee general forums if anybody is interested.