273 Commando air cleaner ?

superdart426 said
the factory ones don't seal there is an air space so the extended space with the 9 inch base will allow more air flow...

Yeah, the only place for the air to get in is around the base. The seal is the top and bottom edge of the element, pressed against the base and the lid.

Your issue may be finding a 9" diameter element with a close-to-correct height.