1960s 1961 Cadillac Fleetwood 60 Special Fuel tank replacement?

[jamoka3]

Good day fellas. Hope all is well.
I have a 1961 Cadillac Fleetwood 60 Special.
Im asking for assistance in finding the proper fuel tank option for this car. I Found a few on OPG but not sure what is authenticity the correct one. I have  attached the vehicle ID tag for reference. 
Also wanted to know if the fuel vent/ "return" in the other picture has fuel going through it when the vehicle is running. I plan on running a temporary fuel cell, and wanted to know if I need to hook up the top tube as well or just leave it in the existing fuel tank as a vent?
Thanks for your time.👍🏻

[Clewisiii]

That is an AC car with a vapor return line. It helps to prevent vapor lock. If you wanted to disconnect it temporarily you would need to plug it to prevent vapor or even gas from spraying in the engine. There are several places selling fuel tanks. I don't know if one is better then the other. They probably come off the same mold. I am debating about buying one in stainless steel.

[Clewisiii]

https://www.autocityclassic.com/1959-1968-cadillac/1959-1968-cadillac-steel-gas-tank-ts24p/