Performance Online’s 1955-57 Chevy Belair power steering conversion gear boxis quality manufactured. These gear boxes are based off of the popular Delphi 600 Series gear box. Our power steering gear boxes are built to precise specifications and tolerances. This Performance Gear Box utilizes the latest in steering technology including a rack and pinion style servo and specifically tuned effort characteristics. The result is quick response, precise control, and smooth operation (through out) the entire steering range. This produces excellent road feel and driver feedback