45rfe over nag1

Hello...I am in the planning process of putting a 2006 5.7 hemi in my 67 charger (I also have a 69 barracuda and don't feel like joining the bbodies only group). Anyway, my donor car has the nag1 trans, and as much as I'd like to use it, it seems like a ridiculous amount of work to get to work(expensive also). So, my question is, will the PCM from the original car(2006 charger) be able to be changed(by my hptuners) to handle a 45rfe, or 5rfe? There is the spot to disable my nag1 and enable either a 4 or 5 speed? Would I just need the harness to plug from my PCM to the trans?