I pulled a line from a 305 powered Grand Prix when I did mine. This required me to pull the body of the GP off the frame at the junkyard with a chain fall hoist. I then changed the line on my Cutlass in much the same way, but I used an engine hoist hooked through the trunk latch loop to do it. My car was quite solid and a bit younger when I did it (1997). If your car is not, I suggest another means of separating the body and frame if you go this route. You also will need a new set of body bushings as the old ones will crumble when you remove them, if you can do so cleanly.
Barring my way of doing things, get some fuel line tubing in bulk from the speed shop and bend your own. Use Adel clamps to hold it in place.