SB aluminum valve cover grommets

I,m looking for some grommets (P5007921) for my cast aluminum valve covers(Mopar Performance).I,ve checked everywhere for these...Summit,Jegs,Mopar Performance and nobody seems to have them?WTF? I,m running EVAP hoses to the front of both valve covers,so drilled out the knockout at the front of one.What have you used for grommets?These are the deep walled ones I,m looking for,not the ones for thin tin covers.Any help would be appreaciated.Thanks