I'm trying to get some opinions on this, I have a jrsc at 6psi on my crx (mods listed below). I just ordered the 8psi boost upgrade kit and currently my cylinder head is milled 40 thousandths. I know that Mr. Gasket has just come out with a stackable head gasket for the D16Z6 motor, which will fit the A6 also. Some people tell me just to run the 8psi with the milled head. The compression ratio is about 10 to 1 now. It wouldn't be the end of the world if the motor blew up since they are cheap motors and I'm a mechanic and also the car is not a daily driver. But I don't want to set myself up for a blown engine for sure. I definately would have it all dyno tuned. What are your opinions? thanks