I am no mechanic but I simply have them left because my dad's car was written off the other week and we didn't get time to change the struts over. You are looking at $430-$460 for a set of KYB's new for the Gen4, I can let them go cheaper than that; if you're interested, please PM me. So how exactly does the car feel when you hit bumps and things? My dad's one was awfully bobby after being run on the same shocks for 175km