I have been thinking about this more. I have a couple of ideas.

I would still run a front valve cover on the rear head try one of these PCV valves:

I was thinking I could tap a oil cap and screw this PCV valve into the cap with either an o-ring around the base or some RTV.

Another option would be to tap the oil cap and put a barbed fitting on it with an inline PCV like this one:

With either way of doing it, the line would then run to the catch can. I will have to tap the EVAP port on the Gen V that is currently blocked off and run a hose from the catch can to that fitting.