Edelbrock cast valve cover breather and PCV
Mancini racing has the Mopar Performance part number P5249642 listed with an outside diameter of 1.22" but I do not know if these are in stock or not.
They also list their own part number MRE5249642. I was going to try some of these since the Mopar Performance cast valve covers no longer come the grommets but have not purchased any yet.
One of these should work for you.