I've had the pleasure to be in correspondence with Peter and Marie. Very nice people.
The truck was originally set up for a mining company and other then the International Cab, is identical to Casa for motor and drive-line. Or was...Peter put in the turbo-charged version of the same motor, and I swapped to Cummins / Allison (thank god!).
I'll send Peter an Email and ask him the post up a thread about the truck.