just get dual springs some nive retainers take it to a good machine shop get your shit switched and definately pay somebody else to put it together from how you talk make sure its not one of your friends either!! and once its running allright take it straight to scotty at mainstream he is good at what he does and if you got 5g's and you want power get you either a GSR and put B16 pistons in it and a set of cams with dual springs or go K20!!!