Need new gas tank + whole system. Advice?

In Germany.......remove that sender and soak it in vinegar as well as the filler tube for a day. They can be rebuilt for the price of a bobbin of sender wire. As for the tank: fill it with a kilo of rocks and strap it to a cement mixer, rotisserie or something that can turn it for an hour. Empty the rocks and rinse with diesel or old gas. It'll look new inside or will bust out of any rusted parts. For a grand, I'd try and clean that stuff first. I got a tank from AMD on closeout for $47 shipped for my 65 but I'm in USA. What kind if looks you get when your driving that thing in Germany? Super cool !