Hey guys mine is auto and pops every time it shifts when I have it to the floor. Its is normal as it's the baffles at full opening so I'm told by my service manager who is a friend of mine. I am not sure if the manual transmission does it but I don't think it does and that's only a guess on my part. Weather it's a Z06 or Stingray I would stick with the auto in either one buy that is my personal preference. There is more that enough power in the Stingray that I'd rather have both hands on the wheel for when it breaks loose. There are four new Vettes on my street and they are all automatic. They are awesome running cars weather they are manual or automatic Z06 or Stingray. Enjoy the cars!