Well they actually came with S engines, so I dont see why an MR2 or Celica transmission with a (3S or 5S) engine wouldnt work...even a Camry tranny should. Normally, being the resident Toyota fool, I'd say "oh just look for W120" but I honestly dont know what transmission it uses because I dont like anything wrong wheel drive and I tend to stay away from transverse engines.

If its not a T50, R154, W58, V160, or A340E, I wouldnt know