adjustable end links are really only needed on a lowered car IMO. When you drop your car it pulls the ends of the sway bar up. the adjustable end links are there to correct this. You lengthen the links. Its also stronger so it wont flex or break under stess. You can adjust preload on the swaybar. The whiteline one comes with them. The next cheapest but still good option is the steeda ones. This is all my opinion though. (so i dont get in trouble by the forum Gods)