I installed a Wenger PCV on my car and the engine runs better and there is no more oil residue around my breather now so it's doing something. I always have a slight drip on the bellhousing but it doesn't leave spots wherever I park it. I'm using a Fel-Pro seal with a billet retainer from Mancini's . I would try a PCV shruggy

Gus beer

64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60