rack and pinion

Why would you want to do that? A good recirculating ball unit such as can be had from Firm Feel or Chrysler part# 3643375 (police box) is as good as or better than any rack and pinion unit in terms or road feel and handling response.

I have heard firm feels box's missing parts needed to complete the iunstallation. I may be mistaken. BUT, a rack is lighter.