I will soon carry the cv carb support bracket for all those in need of one or two. And they will be available for super E's too after a lil massage parlor work. There are so many different breather kits out there that I will leave that choice up to you, but my favorite will always be Benchmark's.
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