"Production of the Model 30U, as it was called, began just three short days after the model U was shut down on, April 5, 1930. As was Chrysler's practice at the time, the 30U did not carry a model year designation - for the first two and a half months the car was a 1930, then on July 1st, with car serial number 1530245, the car became a 1931 model, which is how the 30U remained until the end of production on June 8, 1931."
"Another interesting aspect of the 30U Plymouths is the rear window shape - -early cars were built with a rectangular rear window while later cars were fitted with an oval shaped window (which would be a PA trademark). Exactly when in production this change took place is not known."
Thank you both for the information. I will try to keep photos of it posted as the "transformation" Begins. Also any body out there have a right rear door laying around? may be hard to come by so better start looking right away. Thanks again, TDSS