I've had a couple of TF Air Force trucks, still blue with the yellow stenciling on them. Both had full flow oil filters on them that had the steel canister with the cartridge type filter and were mounted low on the left rear area of the block. Also heavy duty air filters that crossed over the valve cover and had the oil bath hanging down from the underside. These came from Carswell AFB and I have no idea whether all were like this or if they were equipped by a local vender to the military. There wasn't any tags as I recall, just stenciled numbers on the firewall and doors so your's may have been made for some other country.

Evan