Ok, so I also have the double-pane GLASS vv and stack windows (77 Sovereign). I really wanted to be able to see through the windows so I tackled it. I couldn't find info on the forums specific to these windows other than a lot of references to "a lot of threads".
I started with a VV since they were the ugliest. The window is encased in the alum extrusion that is riveted to the outside shell. (Interestingly mine were riveted in with Olympic rivets, not bucked... repaired? replaced?) Removal of the whole assembly was pretty simple. 53 1/8" holes, thin metal putty knife to cut the old caulk/foam, and out she came. I was excited at that point... not so later.
The two halves of the extrusion are not welded; they may have a little putty that looks like weld. They do have STEEL rivets going into a STEEL bar that fits into a channel in each side of the extrusion. The problem is that (actually "those" since there are two on each side but only one is riveted) steel bar. With all of that water that you and I had, the steel bars rusted to high heaven and "expanded" in the extrusion making it very difficult to slide apart to get the glass out. Actually this is the second problem. The first is that those rivets were steel and very difficult to drill out of soft aluminum. I decided to grind them off instead (wrong decision). when I started to punch them down, the back end of the rivet plunked right into the edge of the exterior safety glass.
Oops. So I called the local dealer. The windows ARE available, are 6-8 week back-order, and like noted elsewhere, are NOT double pane... to avoid future double pain. I think he said they are $267 or something close to that.
I really wanted to re-seal the double panes but can not figure out how to get it apart so I decided to tackle the rest by just breaking out the interior pane of glass. Anyone know of a molding to fit back in the resulting gap?
I will try to post pic's later today of the one I have apart so you can see what I found.
sad to have to work the day-job on a saturday,