Fuel fill tube for 71 Duster

I need some advice on this one. I did a search with no luck so lets see what the experts say. Here is a picture of the fuel tube I removed from the tank. It is rusted out and I can not find anyone who sells them. Is there a way to clean the old one and treat it or does anyone know a place to get one? I just got a new tank, lines, and sender so this is my only roadblock to getting the fuel system restored. Thanks in advance.

Ken