Matjow: Don't kid yourself about the 4L65-E being significantly stornger than the 4L60-E. It's stronger in the same sense that Barney Fife was stronger than Opie.

Neither of thse two trannys was built to handle an LS2 let alone a supercharged one!
Joe is correct. I have been waiting to see if I can get the transmission strenghtening done at the same time as the converter, and in fact, I have been talking to Greg at Phoenix, and emailed him again earlier tonight. Stand by.
Any interest in a group buy?
The "right"package is going to be well into the 2's, but worth it. Joe and I have talked about it quite a bit, and Joe had this type of work done on a Silverado SS he owned before. That was apaprently an even much heavier vehicle than the SSR, and the tranny buildup made it bulletproof. Joe, want to chime in?
Jim G