To my knowledge the most obvious indication of a South African built truck was small white reflector lenses fitted to the front fenders,and of course right hand drive,other than that i'm at a loss for more info.
1950 Chevy Advance Design 3100 in Scotland In the Stovebolt Gallery More pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings "Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.