Transmission?
6L80 is a big **** and requires a factory pcm to control it. At this time there is no way to use an aftermarket controller or manual shifter. This adds cost and extra work for the harness, tuning, fitment, PCM, etc.
T56 is still one of my favorite manual transmissions. Every time I consider trading/swapping it out I still default and keep it. Only way I'd change it out for another manual would be for a built TR6060 or "bulletproof" Muncie.








