Sturgeon Amusements from Motueka (northern end of the South Island) appear to be a fan of Bedfords. I snapped three of four of their Bedfords parked in Carterton yesterday. Unfortunately I was working at the time, so only had time for this quick snap and a look as I drove by.
All three shown appear to be KMs. The front one was definitely Detroit powered as I assume were the other two.
The fourth one, which was parked further back, had single headlamps so I'm not sure exactly what model it was or its power plant.