here is a scan from an unknown book showing the GMC version of the truck and it says only 531 were delivered to the Army in 1939/40 with most been used for equipment type trucks like compressor trucks. It also says that another company, Ingersoll-Rand, supplied the air compressor units as well as the others.
__________________
Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"