I tried ripping the PS2 files using http://ps23dformat.wikispaces.com/Rampa ... estruction
, but while the meshes worked almost flawlessly (had wrong names, some files corrupt), the textures were exported at .TXD, though when I tried using the textures ripped from Dolphin it would only take the pixel at the bottom-left. Wii version because it has normal maps. Looking at the VOL files, they seem to be an 1:1 exact copy of the Wii version's: http://i.imgur.com/ZE7yA9I.png
. So it should be easy since all .VOL seems to be is an archive containing the folders in GAME.
Example file: https://transfer.sh/QVzXL/Game.rar