Getting ready to swap a 5.7 into my 73 Dart Swinger

I have looked thru this thread because I have wanted to put a 5.7 with a 6 speed automatic transmission into my 68 Dart. I found the 2012 combo at a swap meet. I had hoped that this had been done enough times already that there would be easy to find info to complete this. Apparently that's not the case.

The engine swap is easy. The six speed is going to take major surgery of the torsion bar crossmember and floor pan.