Top Radiator Hose 1964 grand Prix

Top radiator hose for 1964 Grand Prix
Hello

I need a top radiator hose for my 1964 Grand Prix. I have not beenable to find one that fits like the original hose even though I have tried many suppliers. Ames has one that is similar but not correct. Does any one know where I can get a correct top hose for my car?

Thank you for your time & input.

Tony