I pulled the vinyl roof from my 1969 2 door LeBaron last fall to address some minor rust at the front of the roof. Mine had the padding and tape around the insert, but the seam was also filled with body filler. I am pretty sure that it was original. It made it quite difficult to remove the insert since you did not know where and how many screws there were and many of them were Bondoed (sp) and rusted in and the entire seam was bondoed in. For more than several of the screws, after I found them, I ended up drilling the screw heads off which allowed me to remove the fiberglass insert. I could then remove the screw using vice grips after the insert had been removed. I also found that there are screws inside (5 maybe?) across the bottom of the window holding the fiberglass insert in. To remove these you would have to remove the window first since there is absolutely no room to get any form of screwdriver in there. I hate to say it, but I ended up grinding the heads of these screws off so that I could remove the insert with the window in place. Even that was very difficult. I found several rust holes (2" dia) that I was not aware of under the back of the insert near the trunk on the drivers side and the entire metal under the back of the insert had some rust. I have yet to figure out how exactly I will repair this, but since it is hidden by the insert the actual cosmetics of it are less important than rust abatement. However, I had been toying with the idea of going to the larger rear window for better visibility and to eliminate the vinyl roof and rear window insert and will not be doing that now.
I know that these rear window inserts give an up scale look, but they are a real liability in my opinion.
Good luck
