I just got my new pistons in the mail today. They are SRP (PN 149237) and they are supposed to have a 9.5:1 compression ratio. They are .50mm overbore. I called SRP just to make sure I got the right ones and I asked them what the cc's were supposed to be. They told me -8.4cc's. That seemed like too much of a dish, so I entered all of the info in the Zealautowerks.com compression calculator only to find that I would have closer to 8.85:1 compression. The engine is a B18c(JDM), basically a GSR. So I want to know who is right. Anybody know for sure??