This is a fix for the Kenworth W900 Tri-Drive by Bu5ted, so this works with version 1.30+. There is no need to download the old mod, just pop this in the mod folder and your good to go.
WARNING: DO NOT PUT THIS WITH NEW TRUCK MODS OR ELSE IT WILL RESULT WITH GAME CRASH!!!
Credits: Bu5ted for the mod, Seeker for fixing it.
