I found an old fuel pump and a half in the shed. It's an AC, with what looks like a GM mount. The only casting number I see is #355261, on the lower half. I'm guessing '30s to '50s.
I found out that there were some '37 Studebakers in the family. I googled a great shot of a motor, and that is the same pump. Also found a glove box door and ash tray. I'll stick it all on ebay or something. Thanks guys.