I have pulled them as a unit in my 74 Duster and 75 Dart.
I only had to take out the radiator, the hood, the flex fan, loosen the headers, loosen the motor mounts, any wiring attached to the engine, drop the driveshaft. and take off the tranny stuff.
This stuff is heavy, be safe!!!!
The most important step is this one.
And if you don't have an extra yoke you can take a ziploc bag put it over the end of the tranny and ductape the hell out of it.