Paul,

Thanks for the link on the manual, that will help!
I did find some info on production numbers for the AFKX in Olive Drab. Looks like they made 820 of the comperessor trucks?
Steven

Here is part of the post from Olive Drab:

[by Sgt. Hancock » Mon Aug 23, 2010 1:26 am

I have a very old Observers Directory for WW2 trucks. It cites that there were 5 variants for the G.M.C. A F K X 352. There was the (8-G), a larger "bus" type for medium ordnance repair. The (8-A), a short "bus" type for small ordnance repair, 78 produced. The (8-D), a C.O.E. with a cargo bed built by Heil. 79 were produced. The (8-J / Q / R / U), a C.O.E. with LeRoi and Ingersoll Rand air compressor units, 820 produced. And the (8-C), body by Heil, and originally used as mobile repair shop. Lower body sides could be lowered to horizontal position to extend floor area.
I don't know how to post the web site here, but there are two great pictures on Olive Drab.com of the 352 (8-C). Type 1942 gmc afkx 352 into google search, find Olive Drab.com and click on that page, then scroll down.]

Believe none of what you hear and only part of what you see