There's more to consider than just a hole and grommet – if there's no (or inadequate) baffle keeping liquid oil drops out of the PCV valve, they'll get sucked in and do crummy things (raise oil consumption, lower effective octane rating of your fuel, foul your spark plugs, gum up your intake valves, etc). Extensive info
here (linked page belongs to a company selling an adjustable/tunable PCV valve for 3-digit dollars – an interesting idea the vast majority of us probably would not benefit from. But the baffle article is worth a read).
If you can't/won't add baffles to your valve cover, a decent alternative is to fetch a Stant 10078, Wix 42993, NAPA 2993, or AC-Delco 12C26 breather cap, and a
correct grommet for this breather cap, which is a Dorman 42067, NAPA Balkamp 630-1052 or 630-1074.
These are the crankcase breather cap and grommet for an '84 Buick Electra Estate Wagon with 5.0 litre/307 CID V8. Put the grommet in the cover, and push the breather into the grommet. This breather has an internal filter and a 1" top hole, so just snap a standard Chrysler PCV valve grommet into the top hole and a standard Chrysler PCV valve into the grommet.