There’s a few variables for this fitting. AC, Auto transmission will add a port or 2.

brake vacuum assembly
 

is this the unit you are looking for ?

its a 4 Speed non air car


pretty much does it have bracket to base of carb?

Bracket must of fallen off at some point in storage, looked in the container it was stored in & could not find the bracket, apologies thanks Marc.

I have this one from a '67 Chevelle, has had some abuse on the top side and clear zinc plated. Do you need an original hose and check valve?