I need a good auto tranny for a 97 Jetta 4 cylinder. (Or whatever other cars it comes out of)

I'm not against converting to a 5 speed if I can get all the parts in one shot. I've been told that it is fairly simple to convert as the wiring is the same, just some parameters in the ECU that need to be changed.

Or for that matter, if someone can rebuild the auto for a decent price I could go that route too.