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Message: <blockquote data-quote="aarons_4six" data-source="post: 731086" data-attributes="member: 12964">i found a vortech locally for 1200, non intercooled so its probably a low boost kit (6# i guess). but before i can really start spending big amounts i need to sell 1 of my quads.i dont think the pi swap is for me. no offense for those who have done this, and maybe ill be wrong in my thinking. but i feel to spend 800 on new heads, i may as well just get some ported from whatever company i deem is best. now ive read the npi heads ported are just as good as stock pi? also why do the intake manifolds say to be used only on pi heads? port size perhaps? if so on ported npi heads it should be ok</blockquote>