what is the difference between your kit part# 4.12535.880 and part# 4.12935.880? I see the price difference; one kit is for $555.00 and the other one is $609.00, but cannot distinguish the differ in part description.
This kit comes with a non-adjustable rear sway bar, while the more expensive 4.12935.880 kit comes with an adjustable rear sway bar.