Just a quick note. I'm in the middle of replacing the rear floor in my 51 Canopy Express. As I'm restoring, I cut out the top angles on one side and partially on the other. What surprised me was that the one piece floor wouldn't come out through the rear door opening. I was able to get it out through the side opening, but panels and suburbans don't have the opening, so it may not be possible to do it in one piece.
I'm told that I can get wider marine plywood, but expect that it will be expensive. As the old floor is 63" wide, I'll need a sheet at least that wide. Sure am glad I got it out in one piece for use as a template for the new floor. I've got to replace the inner quarter panels, so it'll be a while before I go back in.
