This is in an ebody so the 4 lines come from the tank and run up through the trunk floor into a vapor- liquid seporator.
There is a 5th line from the seporator that should go to the breather in the valve cover but, its just open to the atmosphere. I can say the return line from the tank is not hooked up in the engine bay, it just has a cap on it. Also on this type system in an ebody the cap should not be vented.
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