Gas tank has been removed and cleaned. Lots of rust. Removed sending unit and learned why the gas gauge wasn't working......See attached photo. The new sending unit I ordered online is coming today but looks nothing like this photo. This is what I ordered...
https://www.classicparts.com/1954-59-Gas-Tank-Sending-Unit-Replacement-Style/productinfo/23-525/Looks like the PO either modified it or used some type of aftermarket without a float. Oh well.
Hopefully today after work I can get everything back together, put on the new fuel pump, and fire this bad boy up. I'll keep everyone updated. Thanks again for the tips.