The fuel neck I have if it screws in with 3 little screws. As for the large hose you can get it from Napa by the foot. If I remember right either the filler neck is larger than the tank neck or the other way around. Any way get the hose to fit the larger size and buy 2 good quality hose clamps to install the hose with. The other hoses are just vent hoses so get what you need from Napa.
I will sell you the fuel neck for $25 shipped with in the lower 48 states. Not sure if I have a gas cap, if I do I will though it in.
You can email me at [email protected]
to set up the transaction.