Sounds like a cool project.
I have found that the 09+ pcm is very different than previous versions. It is tied into the entire vehicles systems and requires a FCM(forward control module) plus noboy can really tune those pcm's yet. I have heard of BG using a challenger 5.7 6-speed pcm and fcms to retrofit this engine in stock form into jeeps but have heard of no one using a truck or other pcm...
http://www.forabodiesonly.com/mopar/showthread.php?t=137545 Check out posts number 1 & 3.
I have been researching this topic for over 2 years and have found that there are not yet any simple or easy solutions to managing the 09 to current 5.7 'Eagle' with a factory computer.
Im not at all trying to discourage you. I hope you can find a way to make it work. But, it will not be a simple matter of plugging it up and rolling down the road. If it was, I would be driving mine.
Good luck and keep us posted on your progress.
Cevidicus