I don’t know of any issues you would have in Texas with a salvage title. When I saw it listed, I had thought about looking at it, but decided I did not need another project. I have heard of ways to clean the title by transferring it to another state. Not sure if it still works. Best to call your insurance agent to see if salvage titles have an impact on insurability.
If you have parts of the fuel pump laying in the oil pan it is time to drop the pan. Don’t want that getting tossed up into the crank. That would be really bad.
Mechanical fuel pumps are cheap and easy to install. I’d get rid of the electric fuel pump.
Brown coffee colored fuel is bad bad bad. Needs to be thrown out.
How did you check for spark? If you have spark at the coil, you should have spark at the plugs, assuming the distributor is timed correctly.
Ospho is the rust converter that I like. Spray it on, let it turn black, rinse it off. Home Depot, Lowe’s, ace, etc... sells it.
Bed liner will not stop,rust, it will only hide it.
But, above all, happy jeeping!