Engine Breather Parts

Hi, I have a 1973 XKE and I’m hoping someone can advise me on replacing the parts. I’m particularly interested in buying the filter that comes with the paper/cloth insert. I can’t find the part on the usual supplier websites such as Moss Motors etc. Which leads me on to a related question - can I simply replace the filter material with air filter paper taken from a normal air filter from O’Reilly’s auto store?


I am having difficulty following which part(s) you are asking about.

This photo is of my engine (72 Series III) just prior to engine removal for restoration. I annotated some of the pipes/lines.

Can you clarify which part(s)