69 Dart convertible

Verts rust in the same places as any a-body. Aditional issues will be found under the belt moulding where the top boot snaps on. Below that is a body piece with tack strip bolted on it. The top skin is anchored there. If it got plenty of rain in it over the years you'll find not just the common floor rust but the seat tracks and understructure of the rear seat bottom rusted too.
Anything can be fixed so long as it's all there.