Bad TCM I NEED HELP
 

I have a bad Transmission control module here in Canada it is a dealer part and cant find in a scrap yard anywhere.
My question is I want to buy one off ebay and I know there are about 5 or 6 model numbers where basically only the last letter changes, does anyone know if you can install any of these and what would happen if you did.
My mechanic would have to charge me to find this out.