I ran out to the garage and took a few pics .the line from under the truck show is replacement but a short piece of fuel line can be used with some threaded nipples until you get one .the sender wire comes up from the grommet , the big hole in the floor has a sponge ring around it were the tank sits and the petcock is the other hole is we’re the line from the top of the tank goes under to the flexible fuel hose then to the front .Your gas gauge looks in good shape you may want to see if a new filter sock will fit on .Some put a filter under the cab but looks like you have one before your pump.
