has anyone measured the dish of factory pistons?

I measured a NPR 2G piston's dish CC that I had before. It was -14cc. Supposed to be the same as the OEM. 1G pistons suppose to have -20cc ~ -21cc, I guess.

^ Jafro in his engine build series.

I haves mahle 13cc dish pistons here. side by side with 2g its clear the mahle dish is bigger. calculation wise 1g at 7.8 and 2g at 8.5 puts dish difference at about 7cc. someone else measured 1g at 19cc. so my best estimates is 1g 19cc and 2g 12cc.

I am doing drop in pistons and didnt want to go lower compression from stock 2g. but also not wanting to run 10/1 either. looking at all choices I decided to try manley with 8cc dish. that should put me very close to 9/1. i will let you know how they work out.