To answer my own question for anyone else who might have the same problem:
Yes, it was the fuel pump. It hummed for a second or two when I jumped the connector, I pulled the jumper and fired right up after that.
I wanted to note though that I should have tested for power at the pumps 2 prong plug just above the drive shaft before i dropped the tank. If it wasnt the pump it would have been all in vain.
Tank looked fine. A mechanic I talked to said if the outside looks fine the inside is usually fine...but there are some tank restore systems that work. I just replaced the rotting hoses amd clamps. he suggested brake cleaner thru the hard lines but that would have been teedious.
Ospho suggested their product would have worked fine though...
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