Tony, I installed a Fulton on my 1953 half ton last summer, then sold the truck. The model number is extremely faint and hard to find, but it is on the underside of the centre section. You have to take the centre section apart to see the number. Mine said 700. If you can't find it, keep looking. There's a lot of small parts as you can see in Tiny's pics. You need all of those parts and fasteners.
Leo