Drago looks a lot like my daughter's Texas rescue dog Maxine. Big feet, short legs, will herd anything.
As for the vent, stock in 67 has the cap inlet outside the air filter. On the snorkel of a silenced air cleaner, and on the housing of an unsilenced air cleaner.
I always thought this was odd as then you are pulling unfiltered air into the crankcase.
Other (earlier???) years just had a cap on the inlet of the valve cover that allowed fresh air in. (May have had oiled mesh inside to catch particulate)
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