I think that there are a lot of cars that fit that bill

1971-74 Javlin AMX's
1970 -72 Chrysler 300 convertibles like this one

http://www.moparpages.com/ppclass/sh...&cat=12&page=1

65-70 Ford Mustang coupes

Dodge Valiant and Dart convertibles

68-70 Pontiac Catalina or Olds Convertibles

I even have a 1970 Olds Cutlass convertible I would sell for $5,000

Great cars are all over the place!