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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.
 

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The flex hose coming of the engine should be steel braided with o-ring female nuts on the end. You'll have to cut the ends off a donor line to get the mail nut with o-ring that fits. I've heard there are adapters to standard double flare fittings (like normal brake/fuel lines) but I've yet to find any. At the tank, I've seen 2 types. Another one of those flex hoses with nuts, or, on the 87 (first year, that's where my tank pickup came from, maybe others) they have a high pressure rubber line with double clamps.

In-line or in-tank, just make sure you can get to it without dropping the tank (obviously not a problem inline) and carry a spare...
 

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Yeah, that was another thing about the inlines I didn't like. I had people who "should know" (people who do TBI conversions!) giving me conflicting info. "Run a Holly black", "No! Run a Holley blue!", "No, run this ...", "No, that one won't last!", "No, it only gives you 12 psi!", ...

I *know* the GM in take works, I *know* the GM in tank lasts, and I *know* I can get the GM in tank version cheap at any parts store, plus I can put in a new one and carry a new spare for what a "good" in line costs...
 
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