The OP, 2boltmain, was interested in the power that could be made with "smogger" low compression pistons. OEM engines seem to always be assembled with pistons lower than published specs. Blueprinting & "Stock class" specs can still have them down in the hole .090" including head gaskets. Considering that they are still normally aspirated, and stock lift to boot, I thought it would be a good example showing the performance potential of lower compressions despite some of the other liberal rules. But there are still notable performances possible without taking the rules to the extreme.