Sorry about thread-jacking an old post, but just in-case anyone comes across this post, I'm still working out some kinks, but I believe that I have accomplished this swap and it was about as bad as swaping digital dic and hud. I will be posting a how-to with diagrams once I've worked everything out. In the mean-time, here are things you will need: both temperature actuators (blend doors look the same but won't work), vacuum control module (located to the right of the blower, is integrated on the manual unit but separate on these), digital hvac head unit, and fan speed processor (behind the blower where the resistor is located), the vacuum tubing, sunload sensor, inside sensor, and ambient temperature sensor. All of these can be bought for less than $50 at the junkyard (mainly because they don't know what half these parts are).
I just wanted to let people like me who have been told "it's not possible" or "it's too hard, don't do it" that it IS possible it does not involve the BCM at all. But let me say one disclaimer, if you are not comfortable with running cabling trough the firewall, soldering wire, reading schematics, and general troubleshooting, then I would warn against attempting this.