The 1963 Classic 4 door, and Station Wagon, were promos only, no kits produced. The American 2 door, and American convertible, were promos and kits. All are JoHan.
I build cars that fall into both categories. I will do lots of internet research on what I want to build. That way I can get my builds as close to what a real car of my subject would be like. I only use actual car colors (Scalefinishes) and color combinations. To me, doing the research on my build, is part of the enjoyment.