The method does work great, but the trouble is finding quality line. Those of us that live in the rust belt know. When I bought my '86 C10 3 years ago, I replaced all the brake and fuel lines, using the method you decribe. Cheap and easy, and worked well, so I thought. I was very proud I had only spent like $30 for lines and fittings. But 3 years later, 2 of those lines have rusted through already. The line you find in auto parts stores isn't worth a crap unless you live in the south. The OEM Steel line lasted 16 years before rusting through. I've ordered quality line from places, inline tube carries it to. But the only way to go living in rust area, is Stainless, IMHO, and you need a $250 flaring set to flare stainless, because its so friggin' hard. Inline wants $25 for the carb to pump line, in stainless, not worth hassleing cutting, bending, flaring your own IMHO.