Blueskies,
It wouldn't be hard to make one up. All you need to do is put the PCV valve in the road draft tube, hook up it up with a vacuum line to the manifold, and filter the fresh air coming in at the oil fill cap. Someone has already done this on my '50 Ford pu flathead ( homemade ). I had a '51 Ford business coupe with the 226 flathead six that had a PCV system from wayback. It had a small oil bath breather cap and a fitting at a 45 deg angle on the road draft tube with a hose going to a vacuum fitting under the carb. The only thing to watch out for would be it sucking oil if the area around the PCV valve isn't baffled well.
Regards,
Del
