I'm not usually one to say "use the search" I just know even in this thread some of your questions have been answered. But to your first question, manufacturers leave something on the table for the aftermarket. As we've seen in many cases so far, there are a ton of people that have gone back to stock with intake and exhaust cause it adds too much sound. You may notice there are a few that say "f" NHV's and let's have fun.
Hedgehog's don't have tail feathers, don't worry man. ;)
I would love a Sticker being in Albuquerque and we've adopted some CARB regs. Luckily there's no visual only OBD2 tests for emissions.
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