[skymangs]

I'll take some measurements and see if I can dig up a pic or two of the attachment to the frame. I basically bevel the 11ga. 1.5" square tube to match the side of the frame, then seam weld all 4 sides. Boxed welds are much less susceptible flex, and the bevel gives you a longer vertical weld, adding even more strength. My running boards have zero flex in them.