Using the K - Tuned Rear LCA is easy. First, make sure your car is on a stable surface and safely lifted. Remove the old rear LCA from your 01 - 05 Civic ES1/EM2/EP3. Then, install the new K - Tuned Rear LCA in its place. When choosing between rubber and spherical bushings, consider your driving needs. Rubber bushings are great for daily driving and offer a more comfortable ride. Spherical bushings are better for racing. As for maintenance, regularly check the bushings for any signs of wear or damage. If you notice any issues, replace the bushings promptly. Also, keep the hardware tightened to ensure optimal performance.