There's an unused board model present in the rethawed files that is a different version of the project 8 board that you can use in the game. You can customize the grip tape, deck, ply and wheels but you need to choose a wheel graphic with another model first then switch back to the unused board and then remove the trucks.
Installation
Extract the mod's .zip file to the data/mod/UserMods/CAS folder of your game directory.
Each item should have its own folder!
Installed items will show in the appropriate category of the Create-a-Skater menu.