Our tubular control arms fit 1958-64 Chevy Impala. These control arms offer improved handing and performance. This is done through geometry and alignment.Caster provides straight-line stability,so in order to achieve our goal; 2 degrees of caster was built into the upper control arms. In addition to our design we include low deflection polyurethane bushings, and we added width to the bushing dimensions so we could increase the holding capability of the control arms when running large tires. Standard ball joints are used for easy replacement and standard springs, air bags, coilover shocks, or hydraulics can be used with the arms.