So it should be close? but the motor is goin to be smogged as a b18c1 which in stock will have only 10:1 and im raising the CR to around 10:8. Are you saying that the ITR 10.6:1 is pretty close to the stock gsr CR and wont effect much of a difference in emission? What about port and polish, would that take any effect in emission? Also, planning to throw in the skunk2 IM with the setup, is that also carb legal? From higher CR you could possibly gain gain 10-20hp along with good flow like cams and the skunk2 IM. Hopefully this setup goes through.. thanks