1965 Dodge Dart Charger

After searching and finding a mint nice used air duct for the left side of the car I found out that someone during the cars lifetime mounted a turn signal relay on the air duct !!!!":banghead:

So after taken loose the gasket I wonder if someone repop the gaskets? I can't recall ever seeing someone do these gaskets. Somy question is if someone knows a vendor for these gaskets?

Thanks FABO