5.9 switch

I know this has been done a lot, but could some one give me a list of things to get and expect for switching my 273 69 Dart GT convert to a 5.9 Magnum from a 99 Durango. the 5.9 has the full serpentine set up still attached, including A/C compressor. My Dart has a 904 tranny with an 8 3/4 rear (3.23) open.