Hole in holley 1920 carb?

My original 1920 had 2 holes drilled through on the back of it, so it went in the trash.
Unfiltered air of any amount is just unacceptable for me.
I could tell someone did it too, because they weren't uniform in placement or angle.
Until "Trash" I put short screws in the holes and cut them flush on the inside.