At first glance, it was easy to assume that Plymouth's 1950 offering was little more than a restyled 1949. Closer examination revealed that although the two cars were definitely siblings, a host of changes had taken place, so much so that only the doors were bolt-for-bolt interchanges between the two years. Basic contours remained the same, with relocated bolt holes and altered cut outs marking the differences between the two model years.As in 1949, Plymouth once again offered three distinct series on two different wheelbases. Model names remained the same, Deluxe and Special Deluxe, but engineering codes were changed to P19 for the short wheelbase Deluxe cars and P20 for the long wheelbase Deluxe and Special Deluxe. The switch from 1949 specifications was accomplished without any downtime, the final 1949s rolling off the line November 25, 1949, followed by the first P20 Special Deluxes that same day.