I've been looking more seriously into turbo'ing my how. One of my main concerns is the power handling capabilities of the stock 6l80, transfer case, and front diff. I'm looking to be in the 450-500whp range which should put me at my end goal of a low 13 second quarter. This is my daily/work vehicle so reliability is key. I've done some reading of guys swapping back to a 4l80 and honestly I see why. I've seen 1000hp rated 4l80s for around 3k which is not much more than a circle d clutch kit for the 6l80. If the 6l80 can hold my power goals I see no need to swap as I don't see the end goal being any different as I have a Shelby for the high hp stuff. I appreciate the input!