With that dash, you have unlimited options as to what will fit, and all of them will have a stock apperance if you have the installation skill.
If you play your cards right, you can fool eveyone, and no one in the world will know the difference. For instance, I saw a 62 Catilina vert. Very correct looking car in all aspects. Had a raido with Pontiac written on the faceplate. The frosting on the cake was his billboard he had with the car. It listed the am/fm cassete as the "a rare factory option." Factory cassette player in a 62: it don't get no rarer den dat!