In the first 10 pages on that auction site (the big Eplay) i found several like the one above for $25 or less. Time to make a few of them into 2 door coupes or 2 door sedans in different colors. Also found this one: itm/304012339118?hash=item46c88c27ae:g:XFQAAOSwpSBgsBfQ
Maybe get one from the late `30's for the used car lot? Some of those can be found for under $25.
If you made it into a Studebaker - Packard dealership the `50 -`52 Studebakers all looked similar as did the `51 - `54 Packards. Only the true enthusiast could tell them apart in 1/43. Studebakers from that era are cheap and plentiful.
Good luck with your project.