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Interested in hearing the answers. I don't think so, without some special tweaking and fabbing at least. But it might!
For us that don't automatically know though, is yours a 2wd or 4wd truck? I know some years the F100 was always a 2wd, but back in your day I'm pretty sure they could be had in both flavors.
Pretty sure too, that there are large differences in the frame near where the box mounts, that would make the big difference in how a later model works.
Good luck. I know this is always a subject of interest.
Steering box, A BIG NOPE. What engine do you have for the pump? Why not get your original rebuilt from either Red Head Steering Gears, or Blue Top Steering. Do it right the first time instead of cobbling something together.