It's pretty close, though. The closest proxy to this that I could find ("inside height" of the truck bed plus "open tailgate to ground") is 57.4-57.7" for a 20

It's pretty close, though. The closest proxy to this that I could find ("inside height" of the truck bed plus "open tailgate to ground") is 57.4-57.7" for a 2015 4x4, while the average adult male in the US is 5'9". https://www.fordfseries.com/wp-content/uploads/2019/01/2019-F150_rozm%C4%9Bry.pdf https://www.fordfseries.com/wp-content/uploads/2019/01/2019-... I don't know about you, but if you looked at the top 1.3" of my head, you'd just see hair. edit: as pointed out, I am bad at math apparently.