[csx4017]

Does anyone have the front and rear spring rates for the CSX4000/6000?? My shocks look to be Pro Shocks. They tell me their data only starts in 2009. My car is an HST built in 2/2007. Tech guy from Pro Shocks said in 2009 they supplied 10" 600LB front and 12" 500 LB rear..........I can run the formula ( free coil #,Dia , spring material dia ) as an alternative and get close............Thanks