Dartin for Divorce

I understand the copper nickel lines work harden,but they dont really flex with a uni-body car.
Softer, yes, easier to flare and bend and more corrosion resistant.

so what is the reasoning to not use it, im curious.

I dont argue with the master mopar builder in my life, he just said steel was better. I bought a 25ft roll anyways.... it will be here on Monday... lol