fuel tank

I have a 66 Valiant and want to remove the gas tank for a
clean out or replaccement. My question is what is the easiest way
to empty it. Also has anyone used the Spectre replacement tank from Rock Auto? Any suggestions and tips for doing this? Thanks for your input.
After a mouth full of gas, much to my sons amusement, I went and got this. Added a length of hose for the tank side and it works great.
https://m.lowes.com/pd/DuraHeat-Ker...MI97PpwoyH4AIVGHZeCh3YvQjrEAQYAiABEgJew_D_BwE