One thing to keep in mind. IF you do replace your springs I would recommend going with the correct ones for YOUR car. What I am saying is this, most often people will install 455, or 400 with a/c springs thinking, bigger/heavier the better. What ends up happening is, people put these bigger/heavier is better springs in a car with no a/c or a 350 car etc. and then they are not happy because the stance/height is too high and people then pull them back out to cut some off etc. My understanding is heating and or cutting springs will effect their recoil and or life span etc. I can say that I have seen this happen all too often. So bottom line, if you are looking for a "correct" stance, install new springs that are correct for your car...