What sucks more than having a bunch of extra shit bracketry around your carb? Billet bracketry.
I cut down these windforcer breathers, you know the ones with a billet dumbell hanging down. So I pressed in some brass npt fittings and screwed in a bronze breather and now we got something not too understated and not too "look how much I spent on a stupid gadget for my bike." Sometimes it's easier to use what you got than to start from scratch.
I make these to fit your original CV, or S&S Super E/G, Super B, Bendix, Mikuni and SU carbs. They measure 5 1/4 diameter x 3/1/8 total height and includes a 5" custom-sized K&N for your filtering pleasure. Mikuni & SU requires adapter bracket ($40). Please specify which style you want when ordering. See store for ordering info, or hit me up at firstname.lastname@example.org