Welcome to the garage Dexstar!.
I have to ask though, what is a Crummie?
Don
Short for "crew crummie"
(informal, British Columbia and U.S. Pacific Northwest) Small van, bus, or railway car used to transport loggers or other resource workers to and from the worksite. A common term when referring to a vehicle with a compartment separate from the cab, housing the silvicultural, logging or mining crew during transport.
Logging companies could be a good source for pristine pickup boxes. They would remove the box from a brand new pickup and install a crummie cabin in it's place. The unused boxes were stacked up in the yard.