Originally Posted by Sam Strano

You must define what you want to change about how the car drives in order to pick the best parts for the job.

Personally, and you will find agreement from anyone else who has been down this road, I find the stock dampers (shocks and struts) to be the biggest issue. The car won't take a set, feels "big", rear jumps around... and while dampers don't cut roll--they do cut roll rate, a LOT. Enough that it's very common for people to tell me their cars "don't roll" after installation of the better dampers. Funny because the car rolls as much--just not nearly as fast and so it feels like much, much less.

Bars cut roll. Springs cut roll and some pitch. Springs are damped by shocks, and the stock shocks aren't great to start with. Doing springs without dampers isn't the smartest move unless you truly only care about looks and could care less about ride, stability, or how easy and confidence inspiring the car is to drive at more than normal pace on a highway.

Shocks, springs and bars are the big three as far as the suspension goes. Each does it's own job, but also interact with the others.