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wow. this debate has gone on for the better part of the last year-year and a half since the ported PI head trend seemed to hit full swing. the PI head group has gathered up info, flow numbers, dyno numbers, and track times to support it's side. the non-PI head group pretty much has...

no way dude. when i rotate mine or my brother's 99 gt wheels it feels a lot heavier then 17 lbs.