During the 1947-1955 Advance Design years three different stock running boards on pickups and panel trucks were produced. Features such as width, number of ribs, thickness of metal, and length of under-braces are the same. When placed together, a difference in length is obvious.
The longest unit was used on the 1 ton pickup and panel trucks with 134′ wheelbase. The pickup bedside has four stake pockets and bed wood length of 107′.
A middle length running board is seen on the ¾ ton pickup (no panel trucks were that length) with 125 wheelbase. The bed side has three stake pockets and bed wood length of 85 3/4′.
The short running board is seen on 1/2 ton pickups, Suburbans, and panel trucks with 116′ wheelbase. The pickup bed side has two stake pockets and bed wood length is 76 7/8′.
When found off a truck at swap meets or in salvage yards, the running boards can be distinguished quickly by observing the number of holes where bolts connect the filler splash aprons. The 1 tons have 5, 3/4 tons have 4, and 1/2 tons have 3.
The adjacent photos are of un-restored running boards with no alterations.