New Guy - '65 273 Valiant Convertible

By "cannister", I assume you mean air filter housing? If you're using an early Carter AFB carb with the smaller 4 7/32" air horn, you can use this adapter to allow you to use any new-style, standard, 5 1/4" 4bbl air cleaner...

http://shop.mr-gasket.com/air-and-f...nd-accessories/4-bbl-air-cleaner-adapter.html