Welcome to the forum.............I'm an ex-Pittsburgh guy myself.

You'll find out no one on here considers any question too dumb. Lots of great people who love to help whenever they get the opportunity,

Just like today, where it is hard to tell one car from another, the cars up until about the late '30's had the same problem..........the bodies on many of them looked pretty similar. Every so often someone will post a picture of some old car, or grille shell, and ask what it is, and unless there is something that really grabs you, we all kinda just guess. I just bought a grille shell that was supposed to be a Model T, but I really think it is some other brand....but who knows??

However, even though the Ford and Plymouth you mention look similar, they were not identical, obviously. As mentioned above, the Plymouths of that era seemed to look more "chopped" and sometimes a little more stylish. The word stylish is open to debate though, as the '34 Ford is one of the prettiest ever made, IMO. There are just subtle differences that seperate the two brands.

Don