I'm going to put a roll cage in place of the bed on my truck, but i need to clear up a few things before i start. First, what thickness tube should I use? I was thinking maybe 2" 3/16, or should i use 1/8? Also, as far as mounting it goes, I was planning on just using like an L shaped mount that would sit over the frame with some thick rubber between it and the frame and then just bolt it in with 3 bolts. What do you guys think?