Hi, musclrmn. I am also new here, and have just started a 37 Dodge, mine is a coupe. I have been through all of the same stuff you are talking about, and, while I don't pretend to have the answer for you, here's what I have learned.
I also want to keep mine a dodge. I considered all sorts of engines and suspensions, including G1 hemi, 340, 360, and 440. I have decided tto go with a G3 efi hemi. There is a 2006 Charger srt8 in a salvage auction next week that I'm lusting for.
As for suspension, I'm not sure yet. One possibility that I looked at was a "Volare" clip. The Volare, Aspen, Cordoba, etc, all had k member assemblies with adjustable ifs suspension, all of which was held on with 4 bolts. Check it out. One problem is that the track width is a bit too wide. I may end up with a "mustang2" suspension, just because they will work, and fit. As was mentioned above, Fat Man or Height will sell you an asseambly without any Ford bits on it. Before I order it, though, I am going to look long and hard at this Charger donor car, and see if there is any way to fit the four wheel independant suspension in my coupe, partly because it's free, but partly because it is a modern tuned, matching suspension, and it would really work well, stop safely, and ride nice.
If you (or anyone else) wants to see some pics of a 37 panel truck with a 5.7 hemi installation, I can fix you up with the link. Have fun...
Glen