driver mod. not a joke.
Cam it, that'll get you there
a GT2 and bolt ons should put you in the 13s unless youre car dumb.
you need headwork to run a GT2 cam, so im not seeing what you are getting at here. i just remember a WHILE ago there was an n/a guy running a GT2 cam setup with S&S headers who was running 13.5s in his car.