Agreed. My buddy Tray in Newport News has an FJ that he purchased the TRD parts package and had installed at time of purchase. Got an exhaust ticket, and had a hell of a time getting out of his ticket. He did, but it was almost not worth the effort. Had he not held on to his original purchase papers / window sticker he would have never been able to prove it.
Yet, Harley Davidson's still get sold with straight pipes and never get messed with.