So I've finally settled and come to the conclusion that I want to upgrade the turbo in each of my trucks in the future were talking when it's feasible. I finally made up my mind what I'm after which is the craziest thing sound that's it I'm to the point that I love the whistle the louder the better what I'm looking for is the loudest whistle that can possibly be had in either truck with a stock turbo upgrade. I personally like the fleece vgt cheetah 71.5 mm sound it sounds the best of all I've heard I'm not looking for added performance but I know that the larger wheel will automatically increase the output regardless I just simply want sound I don't race or hot rod anymore I just simply love hearing the whistle while cruising and idling and the cheetah for the LBZ is perfect but what to do for the lb7 is where I'm lost any input will be greatly appreciated