I agree to some extent rumble. I am not thinking about the internals of the engine, as most of the bad things that can happen to the engine can be controlled to some extent by timing control. I am thinking more along the lines of fuel. To be able to run much more than 4 lbs of boost with a 9.5 to 1 static compression engine you will have to raise the octane level of the fuel past pump gas levels or seriously back off on the timing. Both of which are not the best answer.
Jack
