You need this for the air cleaner base, and they are hard to find.
https://secure.cougarpartscata...ml?sessionthemeid=26
Then this for the hose
https://secure.cougarpartscata...om/d1uz-9d667-a.html
You paint it black, but beware, it is fragile, very thin wall aluminum. I would like to find a substitue, but rubber hoses seem to be way too thick and bulky, and they pull the fitting out of the air cleaner.