I like the idea you have, Cami.
Here are my thoughts on a car style, incorporating the timespan you speak of.
Give it the long and low look of the 1949 Lincoln Mercury hardtop two door "fastback" coupe.
The hood over the engine could have a slightly raised portion on the right side, for the supercharger intake duct. It should be a fairly long hood, in the Duesenberg style.
The sides of the vehicle should incorporate the flowing contourlines of the Bentley Continental Type R of 1959.
And the nose of the vehicle should replicate the Cord812, complete with covered headlights.
The cockpit should have a raked windscreen, and be relatively short of roofline, somewhat in the style of the Bugatti Atlantique.
In short, I'm proposing a melange/blending of several of the most well-known and stylish rare-marque vehicles of their respective eras.
Kind and Respectful Regards Cami, Uyraell.