Best way to clean the gas tank and main fuel line?

I got a 73 Duster recently that sat for many years. On the list of things to do is clean out the gas tank, which is already sitting in the trunk, and run something down the main body fuel line. Looking for suggestions. I was thinking lacquer thinner or acetone for the fuel line, and taking the tank to a local car wash and blasting it every way possible, even putting some limestone in it and shaking it all around, then rinse it out some more.

And ideas for this?