It would be a whole lot easier if you were going in the other direction, from a stick to an auto. The real pain in the butt here is the pedal assembly and swapping it from the stick to the auto car. Everything else is pretty much there, you will need to swap in the old overdrive harness, no big deal, and for the most part past that it is pretty much a direct drop in so long as you have the original donor car to get all of the small pieces like the driveshaft, shifter, relay, etc.

Mark