what are the quick mods?

[YokotaS13]

On an NA
Throttle body, intake mani ported
Cam (But your a DOHC so you shoudl eba ble to use a mild turbo cam, but i dunno how well it owudl work, prolly hinder you)
Header, EGR blockoff plate
Exhaust
High flow cat
headwork,

And by the way, yoru GSX head is the same as yoru NA head minus the cam grind

[burnout1990]

well the head i bought has like stage 1 cams, alot better than my old one i can hear the intake whistle now, instead of before, plus my old head had bent 9 out of 16 lol

[burnout1990]

also what should i do with tb? have it bored and matched with the intake?

[SilverJester]

You could bore it out or get a mustang TB (like a bbk or whatever other brands are out there) and they will be bigger than you could bore the stock one to.