I just registered my 97 3500 4x4 a week ago, it didnt require smog. My door tag says the truck is 11000 pounds. They told me if the door tag says 10000 or more you are exempt. But then the commercial rules apply and if you get caught smoking too bad, you get fines.
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1997 3500 DRW Xtra Cab 4x4 Fuel Plate, Amsoil and AFE cold air intake, injectors, Bully Dog exhaust brake, other stuff.
"Oh Bother", said Pooh, as he chambered another round.