Happy Holiday Season, everyone!
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For the metal lines,
The fuel pump to carb is
The through the torque box to engine compartment might be
The fuel tank to torque
Are the fuel lines the same as a 1969 Mustang?
Considering you are using lock washers I say tighten the pee out of it and forget it
Take it apart from the front, Nut, maybe a washer, pulley, and fan. Then take out the screws holding the halfs together and lift the front cover making