I'm in the early process of getting material for a 8-10 pt cage of my '72 blazer. i also plan to add a stinger style to the front bumper and maybe some tubing on the rear bumper. also, i may make my rock sliders out of tubing. any suggestions on whether to use DOM or HREW?? also i'd like to use a 1 3/4" tubing? would this be sufficient or should i go bigger? finally any suggestions on wall thickness? thanks.