Question about the cold air intakes is there a way to manipulate them so say I have an air force one intake can I attach a K&N Air filter to it or no?

 

if the filter is the same diamiter sure if not then not if you want i will mesure my KandN for you what engine do you got?

 

the air filter attaches to the mass air so you could even put a paper filter on it if you want.
If you want to replace your filter w/ a k&n just get the long narrow filter that would be a replacement for the whole k&n kit.