Moto4forlife: From what I understand, it is up to the owners, they are supposed to report their fleet to CARB and what you are doing for compliance. How they will do the enforcement and subsequent fines is unknown to me. Fleet consist of How many commercially used and/or registered trucks over 14,000lbs Mfg GVWR operated within the state, it also applies to commercial trucks registered out of state operated within CA.
Maxtor: I have also heard from other members having success with using contract order year for the year of the truck on their SF97 and subsequent tile and registration here in CA, since the contract date is earlier, it is usually on a data plate in the contract number.