The vacuum line you will see come up often on The Samba.
Was the fuel line ever metal post '60? The line on the early 34 horse engine (like yours) has the metal line in, but im sure it was always a rubber hose out to the carb?

On another note, where did you buy your air hose, that runs to the air cleaner? Im trying to use the same filter as you I think (maybe only meant for stale air?) and the hose I have is too thin, ie it wont fit.