Everything looks the same so the smog techs don't know that it is really a 22r when it should be a 20r, just like if you own a Samurai and swap the 1300 for the 1600, you can't tell any difference. Plus every legal mod beyond that, like my headers, aux. gas tank and so on are CA. legal and I have the cert. stickers for them mounted in the door like you are supposed to.