Oh my I had no idea there were so many different variants! Fortunately it looks like the HD air cleaner I have matches the engine configuration I have on my car, although what's the difference between a closed ventilation system and an open one? I recall the engine has a PCV valve near the distributor but there is also a breather on the valve cover, is the breather what makes the system "open"?
Edit: I think I understand better now, I found a picture from the manual which cleared it up
Last edited by JPN_GP; 11-26-2021 at 10:04 PM.
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