The bottom pic is the section I cut out, which was the back 16" of the frame. I made a template of what was left [ I guessed a little] and drew it out on 3/16" plate. I cut it out with a band saw then shaped the top and bottom of it to fit and started tack welding it and pinching it down with a vise to put it where I wanted it to get the next tack and worked my way to the end. When I got it all tacked up I passed it on to a good friend to tig weld it. I can tig but he's better than I am and the tig setup at work is down at the moment. Anyway the factory made the frame out of a channel in a channel[ which is one reason why they are prone to rust]. The best I could tell it was like .150 on the outer channel and like .125 on the inner channel. I made mine both inner and outer from the 3/16 plate. I'll try to get some pics of some other things I'm gonna do when I go to attach it to the frame that will give it strength. I'm interested in hearing from anybody that has done this repair or just wants to BS about it.