Strength is not a problem with the metal lines, hooking into them is. The TBI connectors are a funky metric o-ring style. I wound up replacing my lines with a combination of new lines and grafted on ends from a donor truck. As for the pump, I don't like inlines, though they do self prime. My problem with inlines is cost and longevity. They don't last as long as in tank pumps, and they cost about twice as much.