Need suggestions for getting old gas out of tank

Removing the tank is one of the very first things I do when I get an old car. Why in the hell people argue, fuss and fight over doing it, I have no clue. It's VERY easy to do and if you do not do it, you will be forever chasing your tail with fuel problems. These things have been together for 50 years. The amount of crud and rust buildup is unacceptable for any level pf performance, but morons still buck people when they recommend removing the tank. Stupidest thing ever. Do yourself a huge favor. LISTEN to those of us recommending removing, cleaning and inspecting the tank. What I would do is take it to a local radiator shop and let them inspect it. If it passes their inspection, let them professionally clean it and coat in on the inside. It will never rust again. If you do not get it cleaned, you can expect trouble in the fuel system from then on because the tank is the source. Good luck.