Hi All; I have two "original unrestored"1963 BJ7s, one I've had since 1969, and the other since 1974. Their serial numbers are 234 apart. Lower numbered one has the pleated single piece back panel as it should, the other has the complete folding panel and the under panel with the holes for the slide bolt handles to recess in as supplied with the BJ8 cars. My question is how likely is the BJ8 style back panel to be found in a BJ7 car, or is it more likely that someone went through the trouble of fitting the BJ8 panel to the BJ7 for some reason? Anyone else have this BJ8 in a 7 setup? Thanks for your thoughts!