I have been through my suspension and have tried a couple things on the track and the street. I settled on 600lb springs in the front, up from 450lbs. On the rear I went from 600lbs to 500lbs and added a bumpstop. I switched my swaybar to a 1 inch solid from speedway engineering. (that was a project!) My front ride hieght is 4.5 and the rear is 5.25. I also added a .097 aluminum spacer under my steering rack to get the bumpsteer within .030 per inch of travel. The car handles much better now. If you have any question, just let me know!