These were imported into NZ as a flat cowl unit that had the stumps of the windscreen pillars and the channel for the bottom of the windscreen fitted to the cowl. When I blow the pic up I can see the little cover strip about 2inches up the piller.
All of these and Fords, Dodges etc that went to NZ were fitted with wood framed bodies. I once owned a jailbar Ford station wagon with the same wooden type frame as well as a 1941 Fargo 1/2 ton pickup. The Fargo was unusual as it had full length running bords and original rear mudguards with a local built flat tray sitting on top of the rear mudguards.
So to my knowledge most of the main makes in commercials and trucks were either flat cowl or had the bottom of the windscreen pillars fitted and were built with LP bodies in NZ during this era.
cheers
Cliff