I have aluminum fuel line on my Dart. I have lots of mounting clamps (rubber insulated). Also where I connected my AN fittings I used the AN compression fittings that have a rubber bushing for sealing. I didn't flare any ends. Although I never gave any thought to flaring making a stress area prone to cracking, but it makes sense. I just wonder how long the rubber liner of the braided lines holds up to the gas??? How long do you run yours until you replace it?