But doubt the PCV will solve his leak nor will a vacuum pump. The PCV is a great thing for the environment and one would not be able to breathe in any major metropolitan area had they not been mandated by the fed's

The PCV's function is to recycle the blowby fumes back into the intake system, mix them with the incoming air/ fuel and reburn them. It does not create a "vacuum" in the engine as the other air inlet is open to the air cleaner.
Putting a vacuum pump on a street the motor will require an inlet that varies with Engine load / RPM in order to create and maintain a vacuum that does not start sucking the seals, gaskets and oil in