boost levels - somewhere between 8 and 11 psi on pump gas once the car is properly tuned. I suspect that the peak horsepower may not be that high - mid 300's at the wheels - but I think that the car is really going to accelerate well at the low-end and in the mid-range because of the higher compression and the NA rear end. I guess I am saying that I expect to see higher low-end and mid-range torque and power but lower peaks.