OUTDATED! Grab the newest one here: https://tekkenmods.com/mod/1428/kazuya-s-tekken-2-psx-out...
This mod adds Kazuya's original Tekken 2 PSX model to Tekken 7. It also features the original devil mesh when entering devil mode. In order to use it, select the first preset in the character select screen as seen below (not 'Default 1', 'Preset 1' instead).
Enjoy!