Hi,
In order to switch from standard to Auto some of the things that would have to be done during the swap are:
1) Install transmission cooler by radiator and run fluid lines
2) Install transmission control unit, resistor pack, etc.
3) Make modifications to the starting circuit.
4) Modify the backup lamp circuit, cruise control circuit, etc.
5) Install different (4-pin) Throttle Postition Sensor
6) Install transmission pwr/comfort mode switch
As you can tell, most of the above is electrical stuff. Maybe someone can fill you in on the mechanical end of things
-Nick
