OEM head gasket... And you will NOT be able to run above 10psi on that stock map sensor.... So 10psi on a good tune with a stock head gasket.....

You have no need to worry about any other kind of gasket... Collins CRX is making damn near 700hp on an OEM head gasket.... Make the right decision and save your money for bigger and better things..... Like the tires you will need after the first couple weeks