Thomas Ruth has a number of Airbus aircraft that he has modeled. Namely, A300-600, A330-200, A330-300, A340-400, A340-500, and A340-600. You must use the repaint that is designed for the specific model as the dimensions and/or configuration of each aircraft is different.
This site is usefull for seeing the variations in the Airbus family:
http://www.airbus.com/en/aircraftfamilies/Peter