old valve covers on newer heads

[jocko]

that is AWESOME! Thanks very much - the design looks pretty simple and I believe I could make it - I was scratching my head wondering where I could stick a pcv valve...
Now doesn't a pcv valve have a check ball in it or something like that? Your design looks like a simple vent to the carb - and that seems like it ought to work to me! Sounds like you've had no problems with its performance. I might just give this a try - your goal was the exact same one I have. Thanks again.