Anyone with High Flow Cats bother to get that piece of paper that comes with them signed? (The one saying that the stock cats were broken, etc. etc. and that's why these aftermarket ones are on -- I guess it's a legality thing since you're not supposed to tamper with your cats) Anyways, just curious if anyone actually bothered with it or ran into any trouble by not having one signed. (Maybe with emissions people, inspections, etc.?)

Just a little paranoid since this weekend I saw a cop pull a Stang over and start checking for mods and stuff like this... lol. (Not that anyone would be able to get under my car and check anyway...)

Thanks