Firewall Bulkhead Connectors

I am looking for a female firewall bulkhead wire connector for a 1969 Dodge Dart Swinger. I believe this is a 16-14 gauge packard 56 style connector and I have found this style on line. However, I ordered a small bag of these online and they are similar but not identical to the OEM connectors (see pics below). Does anyone know of a source for the OEM connectors or will the one I obtained online work.IMG_0136.jpegIMG_0137.jpeg