Need carb identification help

Ok, I will admit I know nothing about these carbs. I am on the hunt for (2) Rochester 2g carbs. Now I have a local gentleman who has 2 carbs and an intake for sale for $25.00. He "claims" they are 2g's, this is the only pic he has... can anyone help identify these

 

If they fit the bolt pattern of that intake, they're large base 2GCs. You're looking for the small base version.