I’ve read this entire thread and I’m stumped. What’s the issue? You want to run a PCV valve with those valve covers? As pointed out many times, you need to use the correct breather that fits the notched hole in the valve over. On the other side, machine a hole for a common PCV valve diameter and grommet and stuff the PCV valve in there and be done.
I’m not sure how that breaks any but the most minuscule of piggy banks.
Seems like you are stuck mentally masturbating this thing to death. One side gets a breather, the other a common PCV valve. I’d suggest an ME Wagner PCV valve, but that for sure will kill said piggy bank.
The OE’s used a hose from the air cleaner to the breather so the PCV system was pulling in clean, filtered air into the crankcase. And that system will stay much cleaner much longer.
That said, you just need a breather on one side and the PCV valve on the other.