Is There Any Way to Find Out Exactly How Many of These Were Made?

Hey all, new to the forums (and to learning about the ins and outs of A-bodies in general), so this may be a dumb question, but maybe someone can help me out:

My father just picked up a '74 Gold Duster, and I just got done deciphering the fender tag. It's got an A64 Gold Duster code (which, to my knowledge, most of them are, y'know, gold), but also has an FE5 code for Ralleye Red. How common is this, exactly? I found one or two with factory FE5 on the Internet, but that's about it. It has a G75 dual painted mirrors code as well, which to my understanding is also decently uncommon.

Therefore, how would I be able to tell how many of these red Gold Dusters actually exist? Thought about reaching out to Galen Govier to see if he could figure anything out, but I'm not gonna pay yet if there's an option that I missed.

This car has peaked my curiosity and I would love to know more about it.

Thanks!