In California and I am guessing most states it was like the "Wild West" until the early to mid 70's. My production date 3/66 FJ40 is registered as a '67.....because it was first sold in 1967. That's just the way the usta do it. When looking for parts use the production date not the registration date. You will notice many parts are listed with a production month and year cut off e.g. (8/80).
Dyno
Dyno