Which years were gray market cars?

First time poster here. I tried various searches but couldn't get *the* answer, regarding which years of these cars were imported/federalized through the gray market.

In particular I'm wondering about the '83 400i automatic. I'm looking at one and I live in a California Smog Check II county. So the emissions issue is important.

If the '83 is a gray market car, the car I'm looking at is represented to have a California title. That's the good news. But an owner would still have to deal with the Smog Check issue to transfer the registration, and then at re-registration time every other year. If anyone has experience with dealing with California Smog Check and could share information about the hoops they make you jump through, that would be great too.

 

Thanks for all the replies. I mentioned that I had tried to search out of long experience with newsgroups and forums where Search Nazis are ready to pounce on any newb who's failed to search before posting a question.

Speaking of Nazis, the only thing missing from the California Air Resources Board is the goosestepping. Although cars from model years '75 and older are exempt, at change of ownership time all sellers must produce a Smog Check certificate. Smog Check I uses a plain vanilla sniffer test. Smog Check II puts the car on rollers and plugs into the OBD II portal and prompts the operator to run through a series of acceleration and cruising simulations. In both cases the data is uploaded to the DMV in real time, making it harder to cheat I suppose. As I mentioned, I'm in a Smog Check II county. I've had no problems with my late model cars, although some have required some pre-test massaging. But an '83 with one-off gray market emissions equipment is a new frontier. That's why the input of other Californians would be helpful.

You know, what threw me a curve about there being years of the 400i-412 that weren't gray market cars is that I read somewhere that the cars had "U.S. emissions equipment." In '83 that would mean catalytic converters for sure, and likely an O2 sensor and closed loop operation. So I wonder, what did the gray market typically do? And would we expect to see the add-ons still present and functional 30 years later?