Now that I do not remember (flared ends).
I remember the flex lines because it is a convenient cut point. Both myself and my buddy wanted new everything fuel related, so we weren't salvaging. BUT, the replacement flexible fuel lines sold by vendors are flare fitted at both ends.
I bent my own line from the sending unit to the flex line (it goes directly to the frame at this point ), and I flared both ends with fittings to match what they needed to. I have pictures somewhere.
