Replacing gas tank in my '65 Dart...

The tank is off. Spent more time getting the car up on jackstands than taking the tank off. The inside of the tank is just covered with rust and crap.

The third picture show the end of the filler that is closest to the tank itself. The grommet goes around that end. That end is very rusty but the end where the gas nozzle goes in is fairly clean. Was wondering if I could clean off the rusty end enough to just reused it? What would you all recommend to clean off the rust and crap?

The last picture is of the last gallon of gas in the tank that I poured out into a 5 gallon gas can. I saved a sample to show you all the lovely carmel looking gas I have. Yummy! I'll have to show another picture of the bottom of the jar and the ring of crap that has settled in the bottom.


Glenn