I am ready to put the fuel lines on my challenger and will be going with the dual fuel line/vapor return running down the passenger side as would have been original on a 440/6 car. Does anyone have pics of how the two lines were attached to the body, since only one line will clip into the fuel line clips? I have (only)one pic of a 70 Cuda with the dual lines and it has the two lines clipped together with "S" clips. If this is correct does one just piggyback the other line, and if so, was the fuel line or the vapor line in the clips. It would make sense that the fuel line was the one clipped and the vapor return piggybacked, if the line workers even noticed. Any thoughts?

the suction and vent line line get clamped to the car the the return line is attached with the S hooks.

They was some nice pictures posted by RestoRick recently about this exact subject. Do a search.