Looks like it is the valve cover gasket. As for the PVC...all I can see is this hose coming from the tube in the passenger side valve cover into the air intake. Is that sufficient?
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67 Convertible Camaro RS LS3, 6 speed
64 Malibu SS RamJet 350
64 Ford Falcon Sprint 342 SBF, 6 speed (sold)
68 Nova LS1, 6-speed (sold)
67 Camaro 421 SBC Procharger (traded on Lateral-G)
68 SS Camaro 350 (Sold on Lateral-G)
70 Nova LS1 (sold)
The beatings will continue until morale improves