I'm going to make my main bars (that run parallel with the body) out of 2 x 4 x 3/16, and the connecting bars that go to the frame out of 2 x 2 x 3/16...I know it's more weight than the Hrew tubing ya'll are using, but we got the tubing so cheap it was almost free
SVT
Yeah, free for you. Easy on that 2x4, that's my new rear bumper!