I have a mystery and I need the help of this knowledgeable group to solve it! I've located a Plymouth that so far I have been unable to identify as to year and model. I have 2 1930 Plymouth 30Us (Sedan and RS Coupe) so I have been able to eliminate the 30U from the mix. Based on the steering wheel and emblem on the dash I believe it is either a 28 or 29 but here is the real mystery. I thought it might be a RS Roadster based on the top that drops but the car has fixed frames around doors! Does this look like it has been modified from a RS Coupe perhaps or was there a model that does not show up in the standard literature? Thanks for any and all insights!