In the 48 Plymouth line up, the body of the OP would have been a club coupe and would have had a back seat. The Plymouth business coupe didn't have the belt line around the rear of the roof so the transition from the roof to the trunk was much more smooth, but was still a 5 window coupe with a 6' long trunk. The 3 window Dodge and Desoto business coupes had the short passenger compartment (ended behind the front seat) and the long trunk lid that looked to be a mile long.

I prefer the Plymouth 5 window business coupe.