Using our K - Tuned Rear LCA is easy. First, make sure your car is on a stable surface and the engine is off. Remove the old rear LCA carefully and then install the new one in its place. When choosing between rubber and spherical bushings, think about your driving needs. Rubber bushings are great for daily driving, while spherical bushings are better for racing. As for maintenance, check the bushings regularly for wear and tear. If you notice any damage or excessive movement, replace them. Also, keep the LCA clean and lubricated to ensure smooth operation. And always follow the manufacturer's installation instructions for the best results.