I rather just make the car legal. At some point I will superchrage the car and have plenty of legal power. I may never have as much HP as a car that doesnt meet emmissions regulations, but I will still have plenty. When it comes right down to it headers and mid pipe are about the onlt thing that makes getting the car smogged a pain. You can still make plenty of power with those pieces remaining stock. Port the heads and run a legal blower kit, should be good enough. I am always seeing guys running the stock PI cams and making crazy power. There is that one guy on the T&J site that made like 600 HP with the stock heads and cams. Take away his headers and mid pipe and that car should still be well over 500 HP. I just dont think the power that I will lose by staying legal is enough to make it worth the head ache at smog time. I just wish I had felt that way before I did the mods. Of course I did the mods in another state where the rules werent quite so strict.