Fuel Line connection to fuel pump

[jlampka]

I have a 1972 GMC 3500 Super Custom pickup truck that once had and extra fuel tank and now has 1 fuel tank. See photos - both lines from the sending unit run directly to the fuel pump. The larger fuel line (3/8") connects to the IN port of the fuel pump and the smaller fuel line (1/4") connects to the P port. Note - the tank selector lines are disconnected and the tank that sits behind the bench seat is the only tank in the truck.

Do I have the correct installation for the fuel lines to the fuel pump? There doesn't seem to be any other way.

Thanks for any help!