ec_dually
+1y
i dont know about the copper in your dually.. you7 could prooly do it if it was durable enogh like pig said, i have copper 3/8 on my s-10 and it is fine never had a problem, but if i were going to do my dually i would go with stainless, i have dot 1/2 inch on my dually now and have had no problems... just drops hella fast gonnahave to put slow downs for the front...