[cpnbnanamn]

Thanks for the help thus far, Nate! More progress to report! Tested the fuel pump for suction on the tank side. MORE than enough. Found that the fuel line between the tank and pump was clogged. Blew that out, and made a helluva mess. I knew the last filter was nasty with black crap in it, so I decided to keep going and pulled the sending unit.
Attached, are pics of the sending unit's strainer, the crap that blew out, and a shot of the inside of the tank.
I know you used to be able to reseal a tank, but the amount of rust concerns me. Knowing full well that the tank is coming out at some point in the relatively-near future, not sure how much money I want to put into it. I also saw that the strainer on the sending unit is split open. No bueno.