For an 04, you're pretty limited to an 04 or 05 Hemi out of a Ram if you want to stay "in the family" and legal. That's what I've found in my research.whats the easiest V8 to swap into an 04 ........electronically? or are they all pretty much the same?
Nice thing is in our area, we should be able to find a clapped out truck somewhere that runs and drives for not much money so you get all you need from the donor.
I know that my auto swap project cost me a lot more than I expected due to all the little pieces and parts you need to purchase. If I had a donor vehicle, they all would have been included