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In terms of your question op, I would get a catch can. An atmospheric vented pcv system would cause a few issues:
1) if you're in the USA you won't pass carb or any emissions testing.
2) you'll probably have grease stains under the hood which is annoying imo.
Imo I prefer catch cans, or if you must run a catch can but don't have to connected to the intake and have the outlet on the can vent externally. But in this situation you may as well have it connected, unless you don't want to take any chances of oil sucked into the engine.
Note you'll get a check engine light venting externally because these new motors monitor vacuum. Also there is a train of thought that having vacuum is good got the crank case and piston rings.
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