I bought this model many years ago from The Modelhaus. The Modelhau told me they had modified the JoHan'60 Dodge Dart hardtop model to create their convertible kit. So far as I know JoHan never offered the'60 Dart as a convertible model kit. But this kit includes sunvisors and a cover for the lowered top.
Shortly after I bought this kit I moved and the kit became lost.