Well, went to the Getrag site below are the possibilities.
Lower Torque capacity.
http://www.getrag.de/en/218.1?criter...sse=0&x=18&y=7
Higher Torque capacity.
http://www.getrag.de/en/218.1?criter...sse=0&x=24&y=9
Next Oil change, I take a look around to see which model we have. Maybe there is a model number on the tranny somewhere.
Highbread, you work on yours quite a bit. Have you seen any model numbers on the tranny?