Jack,
You can't get an SB-100 number on a real car. They are only for kit cars and replicas. And even they can't be turn key cars as yo have to have the engine and transmission at least installed by someone other than the dealer. Then you have to have every receipt for all of the work and everything when you go into the DMV. So a 1977 Ford, Chevy, or any other manufactured car isn't allowed to be registered using the SB-100 process. My neighbor who has a 2003 diesel Ford pick up had to take it in and have it smog tested last Summer. And they had never tested diesels here before.
Ron