Does anyone know of any tables involving comparisons of the relative strengths of different sizes of steel tube? I already had a thread talking about building an exo cage on my Blazer, and my plan is to use smaller tube (maybe 1.75") and make double hoops. This will keep it strong but make it smaller and more easily bent to contour the body. I have tables that show 1.75"x0.120" should weigh 2.09lb/ft and 2.0"x0.120" should weigh 2.49lb/ft. At a guess if the 1.75" tube weighs about 85% of the 2", it should be about 60% as strong. Any thoughts? Any tables?