why would you want to frankenstein such a new truck? you'd be better off selling it for a 5.7 by far. the cost on a used/crate hemi alone would probably be more than trading to a similar model/year with a hemi already in it.
The truck is paid off and I was trying to save a couple of bucks. Your right. I should buy the 5.9L or a an older Dodge diesel instead. My Uncle, the gear head, at first told me to see if 1) the 5.9L block size, 2) bell housing, 3) computer pinout are all the same. Then he said I should instead trade it in on something with more power than I need. Don't get me wrong the 4.7L is a great around truck. I want to pull 4,000 pound trailers over the Rocky Mountians at 90mph. lol