Does anyone know what is the stock piston rpm or power limit? I'm thinking of using the stock piston with new rings from my Briggs with the arc stock length rod and 94ss cam I have but I'm wondering if it can handle the increased rpm and power. It had great compression, didn't burn oil and the cylinder has no scratches. Before anyone tells me to just get it bored out, I don't know of any shops near me that work on these engines. Plenty of machine shops for cars but I would rather take it to someone familiar with this engine. As for shipping it to a shop.... more money than I would like to spend on that one thing