For the new valve covers they machine the breather holes. I don't like the breathers they offer and doing research it has the nipple for a hose to a separate tank which I am not going to do. Searching I can't find a lot of options for push-in style breathers that look good. I am thinking something like this.
The breather Ray Barton puts on their covers (no-go for me)
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Push-in option I am looking at?
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