Senior Tech Team
Join Date: May 2001
Location: Wheaton, IL USA
The aftermarket stuff is bigger, and that's what you want for cornering is larger sway bars. I don't know the reference, but the fronts & rears are kind of a set.
Lowering springs (I did the 1") improve handling as well by moving the whole car down 1".
Rear arms are fine as stock items unless you're into drag racing. Setting up your suspension for cornering may not be the best for drag racing and vice-versa. Stock should be fine if you're not into serious straight-line hookups.
I went with polygraphite bushings all around and like them a lot. Not rough by any means. Again, some differing opinions on what to use in the rear, but I haven't had any trouble on any of my cars with them. Polyurethane versions are stiffer than stock rubber versions.
Hope that helps a little, good luck!