Saying thanks to y'all for the advice to get a new tank. I have a 2-owner 1957 3100, and yes, it's been sitting a while. Replacing the tank (I'm sure the one that's in there is full - thanks, Dad), and getting the guck out of the single-barrel Rochester are some of the first projects on the way to "resurrected" status.
Special thanks to crenwelge for the eBay suggestion. It's more reasonable than I'd thought it'd be.
