Actual "coil overs" are primarily for racing application. They allow easy changes in springs to suit race track conditions and easy adjustment of ride height (mechanically with a threaded collar). You'd be throwing your money away if you followed through. If your KYBs are silver in color they are decent enough replacement shocks. Their "gas-a-just" line (white in color) are good performance oriented shocks and long lasting. For the ultimate - yellow/blue Bilsteins are very good. -- Dave