I found an old picture of the top of the piston, it has carbon on it and I can’t see any numbers on it. I am concerned that the pistons are wrong, so the motor was built back in 2012 and I had the heads CNC a couple years later so the heads came off. I called CP the other day and asked if they had an order from the engine builder, they told me his last order was 2007 and I have the piston box they came in which has the 2007 date on it, the guy at CP said the pistons that were ordered were 11.1. I’ll be calling them tomorrow to see if the 426H-C means. I’m pretty sure there wrong and the heads haven’t been decked at all. Thanks for all the suggestions and help