You mentioned that the setup you have is made for a B16, so I assumed you meant the entire assembly, not just the compression ratio of the pistons...I misunderstood.

I know the comp ratio changes when switching heads, I never said it didn't...all I said, is that if you have a 10.1 compression with using a B16 head, you aren't going to be anywhere NEAR 12:1 with just changing to a GSR head, especially when using a headgasket that is twice the thickness of the stock gasaket. I never mentioned GOLDEN EAGLE once, if you read that link, you'll notice it says EAGLE, and not GE. My point in them listing the compression ratios for both the GSR and B16 head side by side, is that you can clearly see the correct compression ratio. So why don't you figure out the dish/dome CC piston volume, and look it up on that chart. The GSR head is the 41.6CC combustion volume, and the B16 is the 42.7CC volume. You'll want to look in the CRVTEC section, since your motor is bored, and look for the 3.740 stroke, which is 95mm.