From what I've heard, and my experience working on these things, the swap would not be a "picnic" unless you had a doner vehicle sitting right next to it. You're right, wiring harnesses, PCM/TCM, exhaust, and a bunch of other stuff needs to be swapped. If you're really serious on this though, you may want to call Cleveland Pick-A-Part http://www.clevelandpickapart.com/
and chat with them. They have done and will do for you almost any DCX swap you want....for a price of course. I don't bellieve the it is as outrageous as you might think either, considering the labor involved. Good luck on whatever direction you choose.
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