Is it that you don't have any or you have without keys ? If you have the cylinders a local lock smith can possibly repair and re-key for you.My local guy did. If not try Stephens Performance as they deal in used parts.They may be a source for you.
Just a thought.
I replaced my '64 Valiant locks (door, ignition, and truck) with a new set for a '66. The door lock holes take some reshaping, but the hardware is straightforward.