OK PM's sent to everyone. Yes the 6.o benefits from the CCV mod just like the 7.3.
There are a few different types of the CCV mod. The type where you just run a hose out the back stink from the fumes and not something I want to be smelling. The PSD's will vary greatly as to the amount of blow by and also the amount of oil produced by the CCV mod. Some will claim they never have seen a drop out of their hose and others will get a layer of rust protection from the end of the hose back. Another way is to run the hose to the exhaust, this bung has to welded at exactly the right location and on the exact right angle or you will develop backpressure, our trucks are very sensitive to backpressure and the slightest amount will turn your engine into a oil fountain. Both of these alter the factory flow of air into the intake, this may not be a major deal, but the unit I manufacture doesn't alter the factory flow of air, it just reroutes the air, cleans it and returns it to the factory location on the intake. I hope this answers some of your questions.
Kevin