I know that some of this may be a little foggy so I thought I would post a few photos to clear it up.
The photo of the window is showing how you would cut around the window. This is a VERY rough line, you would spend more time and make a nicer line to cut. That area around the window with the wavy lines would stay on the inner panel when it is removed.
The other photo is of one of these panels that I have removed. This is of course a three window, but the five window would come out the same. The only difference being that little piece of the outer skin of the corner window in the other photo would be hanging on to this panel. You then would remove the inner panel of the three window and cut the holes in the back of the cab where the windows will go. Cut them small at first then trimming them down after the fivewindow inner panel has been trial fit. Install the five window inner panel and weld the lip of the corner window around the hole you have cut in the three window cab. The Center window will stay the same. You just drill out the spot welds as I have done here on this panel. Then spot weld or plug weld the five window panel around the center of the three window cab just as Chevy did it all those years ago.
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http://members.aol.com/goodstuff53/window.jpg[/img]
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http://members.aol.com/goodstuff53/rearpanel.jpg[/img]
