I did receive the data from the microfilm, but haven't talked with a tech advisor. As far as recreating the plate, there is only one source that I've been provided with and he doesn't know the '57 300C plate specifically without an example.
Thanks, Ff56! I am in the 300 club, and have inquired about the plate. Found someone who makes them but he needs a photo of one. CA DMV is a pain and requires it, otherwise I go through the CHP again to re-register it.
I have a 1957 Chrysler 300C sedan that's missing the data plate - left of the radiator? Looking for an example of one to make for it. Is there an example somewhere? Much appreciated!