Both of the return lines connected between the hard lines and the fuel tank (back under the bed, below the filler tube) are leaking and I'm not sure where to buy that type of line.
Suggestions?
I just bought a kit of viton hoses from greaseworks that included those hoses. You might want to give them a call or email. HTH
It's 7 mm I.d....
The hose from the fuel tank to the filler is 42mm I.d. / 8 inches long
GB