Is there still a question here?
I have a 1 ton with the 9' bed (as all 1 ton AD pickup's have) the running boards are the longest of any of the pickups.
I don't know of any aftermarket running boards for a 1 ton
If needed I can take some measurements from my 52 1 ton, and also a 1949 3/4 ton that is visiting for a few weeks?
Grigg