Sorry Terry. I saw that you said the P/N was for hypers. I didn't realize that you were saying they were stock replacements. I was just trying to clarify that they weren't a mid level piston (between stock and forged). Your post was what caused me to call them. I had been contemplating these for a few months. Thanks to your input though, I've saved myself from wasting money and will just save for the forged internals instead.