Stunning Fist requires BAB +8, but monks famously get it as a bonus feat, ignoring that requirement. Unfortunately, I cannot afford to lose BAB because I am playing E6 and want to take take a feat that requires BAB +6.
Do any full-BAB classes also get Stunning Fist as a bonus feat, or is there any other approach to getting it as a full-BAB E6 character? Even better would be to get the superior uses per day of a monk while at full BAB. Also acceptable is a means to count as having Stunning Fist for prerequisites, though this is less desirable.
Any material published by Wizards of the Coast, as well as any 3.5e Dragon or Dungeon material, is acceptable. No alternatives that do not, RAW, qualify as Stunning Fist prerequisites are acceptable. Pathfinder material is likewise unacceptable (otherwise unchained monk is an obvious answer I am already aware of). Shenanigans to get divine power and claim it for meeting the BAB requirements are also frowned upon.