I'm swapping an 02 GT engine and trying to get headers for it. I was looking at KOOK's but I'm worried about the EGR tube that is supposed to go in there. The headers dont come with an opening and Bill Evanoff told me he could just sell me a "chip" that would "fix" that problem. Or an EGR "kit" where I would have to drill a hole into the headers...then later get them ceramic coated. I'm confused, don't I need that EGR tube? Will I pass smog and CA emissions with this?