Looking under the jeep, I see from the Fuel fill inlet on the side of the jeep there is a rubber hose that connects to the metal fuel line that ends at another rubber hose that then connects to the gas tank inlet. What size is the fuel line? in particular the rubber hose that connects the metal fuel line to the gas tank? I am exploring that idea of an aux tank and I need to know the size of the fuel line when I start sourcing parts. Thanks.