Question : Gas tank leaks when more than 3/4 full.

[packardbell]

I suspect that the upper part of the tank is rusted and it leaks when I fill it more than 3/4. Also sometimes when driving the gas sloshing around it would leak too.
Where is the common areas for rust to form on the tank? Should I replace the original 25 year old pump as well? Where can I source a tank cheap? rockauto?

[1988GTU]

Leaks at the seams or thru the hanger assembly/ring & lines. It isn't leaking out the vent or filler tube is it? Commonly rusts out at the lower filler tube assembly. Rock or ebay for tank, and def replace the pumpp with new hanger equipped with sender. Might as well go with an upgraded pump.

[packardbell]

went to the local rad and gas tank specialist and got it for 125 the tank and 2 hours to install it.