Simon,
Glad to hear you are up and running again - too bad you missed all the warm weather, you must like driving your Cobra in the cold.
Just plug the hose from the PCV to manifold vacuum and you'll be fine (should be a fitting on the carb. below the butterflies or if not on the manifold). The only
oil you should be getting is a mist (after a while), which will be pulled through the inlet and go out through the exhaust - you won't even know about it.
If I remember correctly, you had no PCV on the last engine?????
Good to see you Sunday.
GUMBALL UK