Originally Posted by ScOoTeR
Your biggest challenge will be CAN networking for the cluster and finding a suitable transmission (I'd go with a 4L80E and aftermarket controller). I don't know much about the comm bus chrysler uses, but it doesn't seem insurmountable.
I probably will just drop in another Hemi for simplicity sake. However, for conversation sake, you are correct that getting the cluster to work would be the biggest problem. For a trans, I'd probably run a Dodge 47rh. No electronics, no adapters. It also (maybe) will bolt to the stock T-case. Then the prob is getting the t-case to work without a computer.