Fuel Line help

Hi, I have a 70 911T that I am putting a 3.2 SS MFI engine in. In the engine compartment there is a fuel line that comes out near the shock tower and goes along chassis then the rear seats and ends by the tunnel. I know for MFI cars there is a need for two of these fuels lines. My question is in the E or S from 69-71 is there a single hole near the shock tower or two? If there is only a single hole how do the two lines connect? Here are some photos of what I am talking about. Thank you for your help.

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The second fuel line is clipped to those tabs in the corner just above the rubber. From memory i think this is the return to tank.
You can see the line here in my 70 ST build.

Dave

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This photo from my '70E project shows the path of both fuel lines.

Thank you Dave and Tom for the response with photos. Exactly what I needed.