Borgeson now offers a modern Delphi 600 series integral power steering upgrade for the 1971-1973 Ford Mustangs. The Borgeson conversion box is a new modern Delphi 600 series integral power steering gearbox with true modern power steering feel, feedback and a quick 14:1 ratio. Borgeson has manufactured this box to bolt directly to the factory mounting location and to fit the stock power steering linkage without any modifications. The original factory rag joint steering coupler will need to be changed to our part #990018 to fit the new steering box input shaft. Hose kits are available for both stock Ford pumps and our Saginaw P/S pump upgrade kits.