1. There is no bead around the trunk on a cabriolet
2. The roadster flairs out at the fender well (or sinks in to give the appearance of a flare) whereas the cabriolet is rather flat.
3. The top bead blends into the bottom panel differently.
4. The bead around the wheel well is a differnt size and shape, it appears.
Source: http://allshops.org/cgi-bin/community/cforums.cgi?action=messages&postid=9990171910278&threadid=9990170552561&forumid=109019625732215
