Why not buy a Magnum four stroke, it already has the PCV hooked up to the intake manifold. Their set ensures the oil flow from blow by comes through the main bearing to the cam shaft area. That ensures positive lube for the front end and sends the unburnt oil back through the intake valve into the combustion chamber and out the exhaust valve to the muffler. No complicated plumbing from all the ports and fuel tank.

Cheers,

Chip