manifolds ported, in fact I highly recommend it if you are upgrading to bigger turbos and can't swing the extra coin for the upgraded manifolds. Member AJsGarage(Vegas) does them on a limited basis. Pretty big difference in spool up between a set of well ported manis and untouched stock ones. If you decide to spring for a set, make sure it is from someone that knows what he is doing regarding porting, or they could flow worse than stockers. FWIW, Mark