M923 A1 SA330 RAF "Doomsday Drifters" by StuG

GÖNDEREN STUG ZAMAN has a great build of the M923 A1 Truck. He is showing his build step by step on his blog, "Battle Tank Power". You may want to check out the rest of his build photos over at his blog.

M923 Truck is a basic cargo / transport truck with soft cab. It is part of the M939 family of trucks.

The M939 series 5-ton 6x6 truck is a family of United States military logistical transportation trucks which was designed in the late 1980s and has been in service ever since. About 32,000 M939 series trucks are in service. The M939 series is an improved version of the older M809 Truck series of trucks. 

Source: Wikipedia

It is in service with United States, Turkey, Ecuador, Egypt, Lebanon, Saudi Arabia, Republic of China, Mexico, Indonesia, Philippines and Iraq.