Still no boost...

[IHateHacks]

Whatever aftermarket boost gauge you get, make sure its mechanical, not electric. Which means you have to run a vacuum line directly to the gauge. There is no sending unit like an electric gauge uses (like the stock one). It will state whether its mechanical or electric right on the box. That's funny I must like repeating myself, or I must like talking to walls. You can buy a $200 electric boost gauge but a $10 mechanical one will be more accurate.

I'm going to go out on a limb and say, your stock 100,000 mile head gasket will not last very long on 10psi. Then again, a stock 100,000 mile head gasket won't last very long on 7psi.