Hey guys what are these two threaded holes between the t-top and sun visor of my '84 brat? It must be brat specific because my '84 gl didnt have these.

I'm thinking the little wind deflectors.

Yep missing these :

 

Note : Best image I could find ...

Cheers, Bantum ...
 

So did those hold the sun visor up as a deflector? or is that a whole separate wind deflector?

Um ... In a word, No ...

Yep - They are spring loaded & independent of anything, solely to keep wind out.

Cheers, Bantum ...