[motto]

This appears to be a G506 Chevrolet 1-1/2 ton 4x4 that has had the rear half of a cab from something else grafted onto it. The G506 trucks are generally referred to in this country as Yankee Joes. When the cab mod was done and by whom I would have no idea. These trucks originally came with the same cab as used on the GMC 6x6 hard cab which in turn was similar to that used on Chev commercial trucks of that era. Due to the ill fitment of the windscreen and odd door opening this is not the remnants of a K51.

David