M/T valve cover question

So I am going to use a set of M/T aluminum fined valve covers on a 318.

All of the plug holes are knocked out- One is for the twist in fill cap and one is for a breather. The breather hole is like 1.5” i.d. I believe. Has any one successfully installed a PVC in the breather hole? I am assuming somebody makes a grommet for that purpose. I was told a newer Jeep has a PVC with the grommet for that sized hole already. Not sure. I have plenty of grommets for the breather but nothing that fits a pcv.
Thanks!
Joe