Cab separation

Can someone point me to a thread that shows the rear of the cab separating and the fixes some folks have done? Thanks!

1st problems

 

Pictures would be helpful. Need a little more on the location. Isn't the back spot welded?

 

You'd think huh? I don't have truck in hand. Probably stop by shop tomorrow and snap one.

 

Are you talking about something like this? My floor was all the way up to were the red line is. I jacked up the body and ran a bead where the floor tore up. It has held up for a couple years so far. Some people weld on some reinforcing plates too for good measure.

 

That's exactly it. Others? Where can I find info on their fixes?