Note the location of the coilover mounting point. There are two mounting holes designed into the swing arm. We had to use the front hole in order to have sufficient clearance for the shock/spring. This reduced our motion ratio considerably. Now, the car "feels" a spring rate of 40 percent of the actual installed spring rate on the left and 36 percent on the right side. In order to simulate a 200 pound spring that would be mounted to a clamp on the axle tube would require a 500 pound spring on the left and a 550 pound spring on the right side. For this reason, most teams run too soft on springs for a swing arm car.