Also, your issue would not run the system “out of fuel” and you’d never have to pressurize the tank to prime the system with a properly working lift pump.
(You mention “a lot into the orig ip and lp” but wouldn’t you have $0 into them if original? Are they new or 20 years old?)
Good luck with your repairs and yes it’s wise to never leave the house in a 25 year old completely modified vehicle without a decent bag of tools.
And use google when you don’t know something. Would have saved you days and $100s for something you could have fixed almost literally with just a pair of pliers in about 15 min.