I have a 63 ss convertible my problem is its rusted out on top of right quarter an trunk filler panel [see picture] http://i702.photobucket.com/albums/ww27/63an66SScars/novatop002.jpg any ideas on where to locate parts? I bought hardtop full quarter to graft on but its different than convertible at the top. it would be nice to find the top part from a donor car. the floors,trunk, well and rockers are solid. is this a common rust problem on these?