Piston ID

I'm sorry, but I would simply have to cc that dish. But I'm lucky, my cc setup was free. Clear plastic plate from work, drill a hole, 100cc syringe, used, free from my vet, some grease, and some glass cleaner, done!
Its horrible either way and at this point ill just stick in a small cam and a good intake on it and run it since its already .060 over. I'll build a better one later. Ive enjoyed learning how to calculate the dish volume, compression etc.