[John]

There is no reason why a RCR-SLC, or any other car can't be registered in California. SB100 gives you the option of determining the year of the vehicle by either engine or body style. If the body style doesn't resemble any production vehicle, it will be considered a 1960 for smog purposes. As for registering by engine year, if the engine is a crate or out of a 1966 or later car, and you declare you are registering by engine, the car has to meet all smog requirements for the year of manufacture. If you declare by body style, it will be registered by the year of the body style it most represents. If the body doesn't resemble anything, it will assigned a 1960 body style. If registering by body style, it doesn't matter what engine you are using. You could probably get away with using an Allison V12, if you wanted to. There were some recent "clarifications" issued, but if registering by body style, to the best of my knowledge, they don't apply.