Tony I have been interested in this type of Dodge and the earlier ones ('38-'39) for years (about 30 in fact) both in New Zealand and here in Australia.
All the ones that I have seen have had the same instrument panel and Dash as the Kingaroy trucks.
So the other one pictured is a new one on me as I have never seen this type before. I too would be interested in further information if it becomes availiable.
Cliff