Andy i have the Oz DeSoto but as far as i know they all came with single rear window Have had two and one had the 48 badges on and the other had a 42 rear badge also out of the 4 i had two were wrecks for spares and the side trims were different . Was told that after the war T J Richards did not have enough money to fully tool up for the new models and used their 1940 bodies and grafted the styling cues from the new models to the front ends from Canada . Makes it real fun to find body parts .