I am having a roll cage installed into my 72 K5. We want to tie it into the frame, but are having a hard time finding a way to do it because the rocker support boxes are in the way. Is this a smart thing to do with a first generation blazer. I do want to get rid of the body flex that I get off-road. What we are thinking of doing is tearing out the support boxes and making a sub frame that also doubles as a slider. Should we then tie this subframe to the blazers frame? Will the twisting of the frame be too much stress on the sliders? I have searched the website and found other people with this idea, but no one told of how well it worked, and there are no pics to get the idea. If anyone can post pics of how they tied a cage into the frame I would appreciate it.