IF YOU HERE THE END FROMT HE REFEREE, its alot a smog thing, he said the will look to see fi legal, if it has a carb number, than means the compney paid the hefty price to say its legal here and can be on, if it compies with smog then you can run it. so if it is, it will have a carb number or ewhat not. but depends ont he cops, soem have fully built cars them selves, and are just nivce, some are just jerks, i have been pulled over for exaust 2 times, the first time the cop tols me we dont carry db readewrs so we really cant give you a ticekt, aND WHEN I gt pulled over and ask what the law is no one can answer!