[Aussie Mike]

Going by 427 S/Os Sig file I would say the problem is not being able to easily plumb the intake manifold for PCV. I've heard of some of the circuit race guys using an engine driven pump to evacuate the crank case. I guess a smog pump would do the trick too providing it could generate enough vacume.

I've seen a Quad Webber manifold that had been successfully plumbed for PCV. It had a fitting in each of the runners that ran back to a common connection point. I can't imagin you would want to modify that manifold of yours. It sounds like a rare piece of hardware.

Cheers