I have never tried myself in designing customs. But a couple of weeks ago I noted a small contest that is organized by one of the Russian customizers
Alexander Ponomarenko aka
Benderlog. The theme of the contest was the legendary
GAZ M20 Pobeda that was produced between 1946 and 1958 and has become one of the symbols of the first post-Great Patriotic War decade.
These are the three hypothetical modifications of the car.