Bringing a CCKW back from the dead is not for the faint of heart. Parts are very hard to find, I think there is just one guy on our side of the world who sells parts.
Keep in mind the CCKW series of trucks used TWO different drive trains (that is way you see some CCKWs with banjo axles, and others with split axles), and the parts are not interchangeable, you also had a short and long frame (think drive shafts, and brake lines). Even back in the 1980s when Nice rebuilt CCKWs were coming into the states from Europe parts could be spotty to find. Tires? it does not use the common (read cheap) 900:20s like the M35 series truck but the 750:20 tires, go price the tires with tubes, then go times 11, it get very expensive fast, plus getting them changed.
I am not raining on your parade, but I do not want to see you buy the trucks, get in over your head, get discouraged and you give up on the hobby. I see in the photo a great parts truck to keep others going. If you can get the truck cheap, go for it, and break it up to keep other trucks going.
I have owned 2 CCKWs, they are great trucks, but both of mine were rebuilds.
I wish you luck on what ever route you take and thanks for saving our history.
One of the few, Frank USMC RET.