I've been using a "homegrown" system for last year that works great. 6 inches of 3/4 tubing out of valve cover to standard PCV.(this raises the pcv above the oil level in valve cover at high RPM, which tends to get sucked in the motor when you back off),Run 3/8 tube from PCV valve to the power brake vac. fitting.
Get a 3/8 copper tee from plumbing supply house. solder 2 inches of copper tubing to tee side.Using a little silicone , press tee onto top of dipstick tube. Run 3/8 hose out of tee to "barf bottle".( I use a 500ml nalgene bottle, and vent that to the aircleaner housing). I install an "O"ring on dipstick (above the ripples) to make a good seal.You'll need to remove "Tee" to check oil level now, but it works very well.
The dipstick vents the crankcase of blowby at boost. The "snorkle" on the PCV moves it above the oil build up level at boost. The o ring keeps the front of the engine clean.
Next time the valve cover is off check for oil return blockage(silicone worms). And seal the baffle on the back side of valve cover(prevents raw oil passage).