Turns out my neighbor(he rebuilds vintage Ford stuff for a living) had a new diaphragm for my original pump. He rebuilt it in 20 minutes this morning. I'm lucky...
He also pointed out that I could have likely used the good half of both pumps as a quick solution.🤦â€â™‚ï¸
For now, I'm going to take care of one oil fitting leak, repair a wonky fuel pump bolt hole in the block, and finish hard line to the carbs, before we try start up again. I'll update in a week or 2.