I non-oped it back sometime in the mid 90's. I believe at the time the DMV was requiring everyone to re-up their non-op statuses every year or back reg will ensue. I neglected to do so. I can recall checking on getting the bike back on the streets some 15 years ago and the DMV wanted an astronomical sum of money to do so. Hence the second RD frame, complete with clear and current title.
But just recently I went back into the DMV to see what it would cost me if I tried to bring the original entire bike back to current reg. I went in with a bevy of paperwork, including the original non-op paperwork and past registration papers demonstrating that I was the true owner of the bike. The DMV policies have changed so many times over the years, and the workers there have no idea of history or past policies, so I was basically given a pass- only $180 to get it current! But I would have to bring the "complete" bike for a VIN verification to get it back into the system again. I'm not even sure they will accept verification from outside vendors, nor the CHP. She said it wouldn't cost me anything, just show up (no appointment needed, whatever that means) with paperwork and license plate, but they will perform a brake check. First I assumed it meant brake function check, but now I'm starting to think that they want the brake light to work too...
Call Sacramento. Way more helpful and they can look up stuff easily