so is the pcv considered a breather with the tube attached to it? Does each valve cover need one with the tube.
Most of the breather sets I see have one breather with the nipple on it and the other is plain, does that do the job?
Can normal breathers be modified to do this if I drill a hole in the side or something and attach a hose fitting?

The thing is, I bought some nice cast aluminum covers off some guy, he had drilled 2 holes in EACH cover for breathers, so I need two pairs for them.
Should I press in a cap to fill one on each cover, or use them both?