Borgeson - Steering Conversion Kit - P/N: 999021 - 1968-1970 Mustang Complete Power Steering Conversion Kit. Fits 68-70 Mustangs With Manual Steering And 289/302/351W. Includes All Necessary Components For Conversion.Borgeson now offers an integral power steering conversion for your 1965 1970 Classic Mustang. The Borgeson conversion box is a new modern integral power steering gearbox. The Borgeson integral power steering gearbox provides true modern power steering feel, feedback and a sporty 14: 1 ratio. Borgeson has manufactured this box to bolt directly to the factory mounting location and to fit the stock pitman arm without any interference or modification of