Does anyone know if the air suspension on the v10 4XMotion circa 2007/08 is the same as or interchangeable with the suspension on the 2013 4XMotion please? I'm considering seeing an automotive engineer to explore the possibility of increasing my tow all weight from 280kg to the 350kg payload of the v10. Our new van has 300kg ball weight fully loaded and it's very difficult to reposition the payload to reduce the ball load. On that theme, can anyone suggest an engineer in Melbourne who may have knowledge of our vehicles? Thanks Touareg fans!