Here's a link to one that looks to be a pretty nice tank. I replaced my 56 tank through a company called Tanks Inc., but they don't list a 57 tank. My 56 tank is only 14 gallons, this 57 tank holds 20 gallons but is built to OEM specs.
https://www.autopartswarehouse.com/shop_years/ford-fairlane-fuel-tank-1957.html

  Ron Lane,  Meridian, ID

I think I am going to replace my 57 gas tank any suggestion on best tank?