What is it? I'm looking at pistons, just browsing though, and I found some JE pistons, but they're for all kinds of bore sizes. I heard that JE pistons are the best around. So I was just wondering what the stock bore is for my GS-R (in mm's). And what are the best high compression pistons to get? Keep my car's bore stock? What compression? Of course, I'm asking because I wanna go N/A with my car.