I planned on upgrading the drivetrain, i just hadn't mentioned it in this thread.I am going to open a new topic. The 6L80E are actually pretty stout, supposedly handling 450hp stock. (6L90E 550hp) My plans were to get a larger cooler, 2500 stall, and proper tune. The 6L80E has its own ECU that you can program line pressure, shift points, firmness etc so the only other upgrade would be the clutches if they wear prematurely which I doubt.