Help!!!! valve cover holes

[Bummy2V]

Hey guys I have an early model 2003 5.4 2v and I got some trick flow valve covers for it. I know the passenger side is the PCV side. I was wondering if the driver side is also a PCV hole or is it a vaccum? Can anyone let me know what the driver side is and if it can be blocked off. The EGR tube is in the way and I can't attach anything to it because it won't fit and if I attach a hose to it, it will start to suck oil and it starts to smoke a lot. Would I need a catch can with a breather, or can I just block it off. Thank you

 

[Hamfisted]

Driver's side would be the breather hose side. It should be connected to the tube coming off the filtered air plumbing that goes to the throttle body. It should not be blocked off, it should be filtered air.








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