For the skin to work You must have this truck in your game as it is an in game truck. Also it must be listed as daf_xf105_4x2 (DAF xf105 4x2 Euro truck) in your truck folder.
For the skin to work You must have this truck in your game as it is an in game truck. Also it must be listed as kw900 (Kenworth w900) in your truck folder.