There was a post somewhere on one of these boards where if I recall correctly, someone did do a similar upgrade. You would have to search all of the boards to see if you could find it. I think a few things did have to be changed in order to have it work properly.
There was at one time a member by the name of "Key Diesel" who was a GM tech specializing in these transmissions. He posted some very good information on the Enclave or Acadia board regarding the wave plate, etc. I believe he was in the Michigan area, but did have his phone number and email listed. He would be a good person to contact if you can find him.
