I have been tightening up the IRS and getting more camber dialed in, but with stock springs I still get a lot of body roll. I drive the car 7K-9K miles a year and lowered springs would pose a problem. Has anyone tried using spring rubbers to increase the spring rate when going on track? It seems like a simple fix to stiffen up for the track and then yank them out for the street. Steele makes various spring rubbers - $50 each.