Place the mod file at following directory:
"C:\Program Files (x86)\Steam\steamapps\common\TEKKEN 8\Polaris\Content\Paks\~mods"
Create "~mods" folder if there is not. Creating this mod took my 10 days as there were 312 voice files overhauled in it. As a demonstration, I leave a link of a video that I used this mod in a fight at section.
https://www.youtube.com/watch?v=X-8yvIP8xRw&t=42s
R.I.P. Daisuke Gōri (The Voice Actor of Heihachi from Tekken 3 to 6 in the mod)