I agree with the other posts. If you were to go with some form of forced induction, a turbocharger kit would be the better route, and even that would be dicey unless it's ready-made to run with your engine. Should you be dead set on increasing your motor's output, I'd go with the following:AEM cold air (V2 model, if available)A good cat-back exhaustLow restriction catalytic converter (except in Calif.)HeadersIridium plugsHigh lift camsECM module (aka, 'chipset')The above would provide your motor with up to a 25% overall improvement while avoiding the messiness of trying to custom fab a supercharger or turbocharger solution.