I checked my stash as well, all I have is the Monogram kit; 1/24, F-350 "Duallie" crew cab 2wd.
I like your idea, there is a 1:1 Ford Super Duty done up like that in my area. It looks pretty cool.
There is a 4dr duallie resin kit but I forget who makes it, I've seen it in one of the mags.
Good luck with the project.