id probably just run 10-12psi MAX with a stock head gasket and bolts.... also i heard alot of things about boost creep on this thread so i will let you know that another thing thatll help it just a lil bit would be to get an o2 housing or dump pipe as people call it... they're about 150 bucks and i know Tomei USA is a good brand and i'll stand by them on that.... hit me up if you have any more questions
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Who knew it was a 450hp monster?! 
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