66 Dart convertible floor pans

The Dart 4 dr floorpan's are the same, I'm sure from 63-66 Dart will
all fit in the front's. The rear footwell's are somewhat different between Dodge and Plymouth. There are some different place's to buy from.... like Auto Body Specialty in Connecticut, you can Google them to get to there website. Their are many other great people on this site, that will post up other information for you.