Big Brother has custom fit ones (crew cab, nobody has a thought for these big guys).
They look pretty same as these:
Are you looking for a flat step that goes from front wheel to bed wheel (such as LMC’s), or something similar to these ones, that are frame attached and just as long as door space?
Available for Regular or King cabs, black or stainless:
https://realtruck.com/p/ionic-3-black-nerf-bars/v/ford/f150/1986/
Jeff / 1984 F350 Crew Cab 4x4/5.8L w351 4V/ T18/ D50 4.10 front/ 8' bed.
Restored 2019-2022.
Nicknamed «Big Brother 1984», due to its soooo-looong shape & nod to George Orwell's 1984 famous novel.