PVC breathers on valve covers

I abstain from this discussion as my answer will only serve to cause great argument.

I doubt it, cause you are right!

OP has an nice looking engine and I am sure he wants to keep it that way!

Mguner brings up a good point as well. Not all PCV's are the same and you may have to try a few to find one best for your application.

I would stay away from an evacuation system unless strip use with open headers is all you are going to do.