Ways to Get Stunning Fist?

[Inevitability]

The default rule for feats is that you have to meet their prerequisites.

Yeah, and the default rule for bonus feats is that you don't need the prerequisites to use them.

"Creatures often do not have the prerequisites for a bonus feat. If this is so, the creature can still use the feat."


So making that fit together... I guess you need to qualify for bonus feat Stunning Fist to get it, but not to use it? In which case lycanthropy shenanigans (get infected to boost BAB, take feat, get cured) might do the trick.