On my 47 COE, the radiator filler is cracked. I think it's brass and I don't know how to repair it. Can you braze it with a torch and brass rod?

https://goo.gl/photos/7xrKhZNps6WyKdN36

https://goo.gl/photos/z1CZj1g6mp8yPL5QA


1947 First Series Chevy 2 ton COE
2005 - It started in the Gallery
2023 - Follow the restoration in my Project Journal
1962 IH Scout 80
1982 Chevy Caprice Classic