Ok, So I purchased the combo toolbox/60 gal aux fuel tank from Northern Tool. . nice unit, gravity feed into your Fuel Filler tube. My question is this, do you need a specific filler tube or can you use just any 1 1/2 inch Fuel hose for that... I was thinking of buying a new hose and installing the valve in that and just putting that hose on and taking off the original and keeping it in the event I get rid of this truck. . cause the tank comes with me if I ever get rid of it.