In either place you're going to have to install a baffle, which will probably involve drilling a hole with a 1 1/8" hole saw.
Available
here, halfway down the page. Don't pay attention to the 1 1/4" dimension; a 1 1/8" hole saw makes the right sized hole.
The problem with this baffle (and one just like it from Mr Gasket) is the PCV valve is too small to fit in it; you'll have to purchase another grommet from your local parts house (usually located by the PCV valves) to fit the PCV, and use a belt sander to modify the OD so it'll fit in the baffle. A grommet with a lip on it looks best. I wish there was an easier way to install a baffle, but I haven't found one. A baffle is the last line of defense in keeping the
oil out and letting the blowby get through to the PCV valve.
If putting a PCV valve in a valve cover, find an original valve cover for location of the PCV valve, as it has to go between the valves between 2 cylinders and located so it won't hit the rocker shaft.
Dan