This mod replaces all of Feng's voice with Heihachi's.

Follow the directory at bottom (create "Mods" file if you don't have one) and drop the pak there.

C:\Program Files (x86)\Steam\steamapps\common\TEKKEN 8\Polaris\Content\Paks\Mods

I also share a recipe of how to make Feng look like Heihachi:

Body

Hair: Shaved Head Facial Hair: Wild Beard (Mustache) (Gray or White color) Eyebrow color: Gray or White color Tan: Tan

Accessory 1 > Straight Hair Extension A (Gray or White color)

Overall Size: 100 Front/Back Width: 50 Move Up/Down: 4 Move Left/Right: -5 Move Front/Back: 1 Rotate Up/Down: 60 Rotate Left/Right: -60 Tilt: 60

Accessory 2 > Straight Hair Extension B (Gray or White color)

Overall Size: 100 Front/Back Width: 50 Move Up/Down: 4 Move Left/Right: 5 Move Front/Back: 0 Rotate Up/Down: 60 Rotate Left/Right: 60 Tilt: -60