I was able to finally finish up the quarter panel install this weekend. It took a few weekends due to all the trial fitting. In the last couple of weeks I had welded in the new outer wheelhouse and trunk extension. Then I primed everything with epoxy primer before going over the seam with Duramix seam sealer just to be sure. You can't see the seam once the quarter panel is installed so I didn't worry about making that joint perfect. I also cleaned, rebuilt and relubed the quarter window. It's amazing how nice and smooth it rolls up and down now!
It was pretty easy to do with the quarter panel out of the way, but I bet the quarter window would be a PITA to remove/replace with the quarter installed.
On the quarter panel I just need to grind the welds flat and make sure I didn't leave any pinholes or anything. I think it came out pretty good overall. Not perfect, but it's pretty darn good and a lot better than adding an inch thick of body filler over that nasty old seam. When I readjusted the quarter panel it fit the curve of the door pretty well. So good in fact that it showed that I sanded a flat spot in the edge of the door that I didn't really notice before.
The only thing I'm not happy about is I couldn't get the door gap that great, but part of it might be because the door itself is out of alignment. I need to realign the door to the quarter panel, then go back and try and realign the fender. Anyway, these pics are of the process before I completed all the welding.
Travis
72 Cuda