Thanks for the input.

I went to advance auto where they actually have a trunk full of assorted fuel line, fuel injection line, vacuum hose, and coolant hoses. I was able to find two fuel lines in the right sizes.

The diagrams provided in this thread https://www.crossfireforum.org/forum...004-coupe.html by chevyboyac was really helpful.

The hose that sprang a leak was the "return flow to fuel tank" hose (the big one in the middle) shown in the below diagram.

The "return to fuel tank" hose was a 1/4" fuel line hose and the "feed from fuel pump" hose is a 3/8" fuel line hose at Advance Auto Parts FYI.

Hopefully this helps add to the collective knowledge of the forum since this topic doesn't seem to be covered (springing a fuel line leak) in much detail here (one of the few areas you can't find information on!).

Will post an update after the install. I am replacing the fuel filter with the MAHLE-KNECHT KL-28 unit (Part #002-477-30-01 / 0024773001: Mercedes Fuel Filter With 4 Push-on Fittings (75 mm Diameter) 0024773001 - RM European Auto Parts