Im looking for a new or refurbished 72 240z gas tank. The one i have is rusted pretty good. If anyone knows where i can find one online thats less than 200$ or has one they are selling let me know. Thanks.

Find a good radiator shop and have them fix your tank. There are no new tanks, and another used one will likely leak just as bad.

Find a nearby shop that is connected with Gas Tank Renu-USA, I used Moyers Tanks in Greensburg, PA. Remove the tank and take it shop. They cut it in half, clean it, coat it and weld it back together. Good as new. It cost me $329.00.