to the OP I stated that I used Galvanized water pipe, If you go to Lowe's they carry Southland Pipe & Company piping rating ASTM A-53 sold as generic GAL water pipe. "ASTM A53 is a carbon steel alloy, used for structural steel pipe. The alloy specifications are set by ASTM International, in specification ASTM A53/A53M. A53 pipe is suitable for structural or pressure applications".... I've done the homework.... However like I posted I did mount them to the cab mounts. I live in Florida not the MOAB they will do everything I need them to do and more. I butted the baset pipe to the stock lift point. Im so certain they will hold the truck up that I have Hi-Lifted the truck via the pipe... Is the frame a better spot? yes... but it will suffice for my needs! best of luck to you!