Correct breather for cast aluminum valve covers

Well, if it was mine, I would plug the so called breather hole. If the one hose is a vent for the fuel tank, find another place?Get a 1/4 lock breather for the cap in the back on the pass side. Surprised I guess that there are 2 holes punched in each valve cover, are there baffles under the pcv valve and the cap on the pass side?

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