No, I don't have an AD. It is a '46, and is the same body as yours except for the grill and different hood sides.
The interior light on an AD is in the middle at the back curve of the cab above your head. My interior light is almost directly behind the driver's head. My truck is definitely the "Art Deco" series.
It may be because it's a GMC, they had several features that the Chevs didn't in these years.
