New to me Barracuda with Mopar Crate 390hp low oil pressure

Explain the PCV system. It has a PCV on one side but what's on the other side?
Passenger side has what i assume is PCV screwed into the valve cover. Hose runs to intake Manifold. Front passenger side is rubber plug.

driver side rear has a baffled vent. Front driver side is oil fill cap not baffled.

Valve covers are Mopar that I assume came on the crate engine.