fuel line replacement 1995 jimmy

I plan to replace my fuel lines with nylon. I looked all over the engine but didn't see where the lines come in at the engine. I felt 2 lines coming into the back of the manifold(?). The "How To" manual is real helpful. It says to replace them the same way you took them apart - no pictures. Anyone know?

I figured it out. Just for reference they are the 2 lines that come in just below the plenum in the back of the engine. You can't see them.