I found another forum discussing PCV Valve replacement
In this picture, is the PCV Valve the Green arrow or the Red arrow? There seems to be some debate.

On my Baja, I unscrewed the green arrow one, and there is no valve. The fitting is open. I am guessing it must be the red one. Can someone help me on this? None of the local parts stores stock the PCV Valve. One posting I saw said this part is not intended to be changed.
Another forum I found suggested putting Teflon tape over the PCV Valve threads. Is that really needed?