On a late 260Z, the fuel inlet and return fittings are next to each other on the front of the tank. They are the same size and one ends on each side of the baffle, but I don't know which is which. Can someone tell me which is the supply line?

I'd guess this pipe on the bottom right of the photo is the return since it's fairly high off the tank bottom, but???

According to the diagram in the E-Fast system, the return is on the drivers side, and the supply line is on the passenger side. See attached nothing the description of part #15 in the text in the field at the bottom. Part#16 is named "Hose-Fuel FT to strainer".