So what would be the best trans to use if the 4t65-e would not work? Does anyone have a parts list for a build up of the 4t60-HD? I am currently having my 3.1L turbo rebuilt and adding in a few stronger parts to the mix in order to be able to upgrade the turbo and would like to produce 350+ hp. I don't want to have to put the engine in just to have the trans blow up on me if I upgrade the turbo and produce over 300hp. Any recommendations would be greatly appreciated.

-smg980