Thanks guys for all the suggestions! Much appreciated! I crawled under the car this morning and it appears that it is indeed the fuel sending unit that is the problem. The rubber hose that connects to the fuel line looks to be new so I don't think that's the issue.
I'm having the fuel system converted from carburetor to EFI. The parts have been ordered but as usual, everything is on back order. Once all the parts on in, the tank will have to be dropped at that point anyway so the shop can install a new electic pump. We can sort out any other tank issues at that time.
In the meantime, I'm not going to fill the tank all the way. I'll drain out some of the fuel. I'm trying to decide if it's worth the trouble to order the necessary tool and gaskets or just wait unti the car goes into the shop for the EFI conversion.
