2014 A8L sports package info needed
 

I'm researching for my dad who is considering trading his 2012 A8L 4.2 NA for a 2014 4.0 TT but we are trying to find more info on the "sports package" which adds another setting above dynamic for the suspension and a limited slip rear diff.

Does anyone have more technical info on the difference?
Are the Air suspension hardware parts the same as 2013 or does it have different air struts????

Thank you.

Mike