I started with 400lb springs. Changing to the 450lb was a "knee jerk" reaction to trying to solve the body roll issue. Now I know the problem wasn't spring rate or sway bar size, it was the long roll couple. While I was making the adjustments, Denny and I discussed making a bigger sway bar. I wanted to hold off to see how the geometry changes affected the body roll. As it turns out, I think the standard bar is fine. Now physics is handling body roll as opposed to springs and sway bar. The 400lb springs may be fine, but I'm not changing them out because I haven't felt any feedback from the car that would indicated it being over sprung.
