Al,

PCV is in the valley pan. I have an aftermarket style air cleaner similar to yours pictured above. Oil filler cap on the passenger side valve cover. No opening on the drivers side. I had the breather installed in place of the oil fill cap which resulted in the rough idle. I'll first try re-routing the PCV hose back to the manifold if the carb port is insufficient and there are no other available ports. If that doesn't work, I'll put the breather cap back on and adjust the mixture screws.

I'll report back on any changes. Thanks!