dude....handling mod is the most difficult mod i fink to my self, im not sure wat u done of ur handling mod, but after few track day and many mountain run, i notice handling is th emost important mod to s2k, etc camber joint ,plate, roll center , bushing, sway bay, lower bar, sub frame, coil , srping, adjustable control arm, rear camber hub , coil, srping also by setting the handling, how much camber u need and very importtant the corner weight setting too, maybe im just too enjoy when i can full thrott when it entering the corner rather than straight....beside brake are important too but factory one already good by just simpling upgrading the pads!!