First DON"T buy a decal kit. Those include a bunch of decals never used or incorrect for your application. Buy them individually and from a quality supplier. Currently for commercially sold decals and stickers find ESC decals. They are sold by many of the parts suppliers often marked "concours" while the other supplier is not
For your engine you will need the
- Cubic inch for the top of the air cleaner
- The replacement parts decal for the drivers side of the base
- May or may not have a small rectangle air filter replacement sticker on the forward face of the base just to the drivers side of the snorkel
For the rest of the engine and compartment
- Battery inspection (not available in reproduction form commercially
- Engine ID sticker that identifies the type engine type, emissions, transmission and so on specific
- Service decal - drivers side engine compartment - placement often dependent on when the car was built and sometimes if the car had AC
- The brake fluid warning sticker on the master cylinder lid
- There were other wire loom, spark plug & coil wire stickers and a thick paper label on the wire plug at the voltage regulator but it sounds like that is not your current focus
Sorry no know period pictures of San Jose built cars
A related thread posted elsewhere a number of yeas ago
San Jose 1967 GTA C Code Coupe Decals/Tags