Nice, good to see it was a fuel delivery issue and not something more serious.
I would absolutely buy a welder and start some projects with it, but there is no way I would I would weld on that frame. It's not just sticking metal together like when welding with clean mild steel on a bench, standing/looking down on your work., with plenty of room to move and get angles right. Welding under a vehicle on your back onto varying thicknesses of contaminated and perforated metal next to all kind of surfaces and lines that don't do well with that kind of heat is a different animal.
Frame swapping is the way to go but an extraordinary amount of work; especially given the level of corrosion on the rest of the vehicle.
I hate to say it but I'd put my effort into making some money and freshening up the nice 100 you already have with parts from it. With the lower miles on a well running drivetrain, ABS booster, etc. it would be worth the effort and you'll come out well economically speaking. I love seeing a vehicle saved and dont want to be a naysayer so if you head down the path anyway I wish you the best of luck. I've tried it myself and wouldn't wish it on, you know.
I appreciate your insight, and have enjoyed your technical input on your own build thread over the last few years.
Regarding Crusty, the more I think about it, the more a frame swap really does seem to be the answer for this truck.
I have a lead on a frame, but my reservation is in that while I have significant experience doing 1-3 banana jobs (on a 5 banana scale), I may get in over my head and then be stuck with a frame and truck partially disassembled in my back yard work area and no real path forward.
While we aren't destitute, I don't have it in the budget to buy all new lines, rubber, suspension and everything else you'd want to do "while you're in there" doing a frame swap.
Crusty has a lot of much nicer pieces than my other 100, and would certainly benefit me to swap most all of the interior over, and the wheels and tires are in better shape. An interior swap would enable me to address the body rust on my truck.
But I like Crusty's color more, which is why I am more intent on saving it.
Absolutely hate the idea of a potentially good truck being stripped down and scrapped. Something in me is opposed to that, maybe it's because i've wanted cruisers so long and finally have them?
Quite the conundrum i've gotten myself into.