I have a 203 Workbull with the Perkins AD3-152 diesel that has transmission trouble. After getting the price estimate on parts alone, it would be far more cost effective to scrap this transmission and get a complete, used replacement. Mine is a 3spd. with high and low (6spd) and shuttle shift. I don't care about the shuttle option so that's not an issue. I've been comparing the MF35 trans with mine and they sure look interchangeable but I can't be sure without actually seeing one. So, if anyone has any thoughts on this swap, I would like to hear from you. You might just save an old tractor from the scrapyard!