Well it runs! Took a little bit to figure out why the key wouldn't turn, but it looks like the EIS looks at a few more things than the ecu. It turns out it looks at the steering column and shifter assembly in addition to the ecu. Might help to answer more of what would be needed to move over!
Car seems to run good, have a handful of smaller things to try and figure out how to make work and what not. I did go ahead and switch to the wagon rear SAM. I was able to plug the wagon specific wiring that goes to the liftgate and tail lights into the rear SAM, all lights and the handle seems to work well there.
