Newly manufactured modern power steering gearbox, designed to deliver a quick 14:1 ratio and firm modern steering feel for classic 1965-1979 Mopar models. Features: Fits 1965-1979 Mopar cars with factory power or manual steering 11/16"-36 spline input shaft Quick 14:1 steering ratio New modern power steering gearbox design Direct bolt-on to factory K-member mounting location Fits original 1-1/4" Mopar pitman arm Significantly increases header clearance 10 lb. weight savings over factory power box Steering column modifications required — see product instructions for details Requires shortening of the factory steering column shaft Recommended Borgeson Mopar vibration reducing U-joint coupling BRG 036425 for installation (drill bit and pins included) Use of a power steering cooler is highly recommended Assembled and tested in the USA from globally sourced components 3-year warranty Note:Will fit all original Mopar 1-1/4" pitman shafts. Vehicles with the smaller 1-1/8" pitman shaft will require part BRG 800126. Specifications: Input Shaft: 11/16"-36 Spline Pitman Shaft: 1-1/4" Mopar with 32 Splines and 4 Master Splines Pressure Port: 16mm X 1.5 Flare (Located closest to engine) Return Port: 16mm X 1.5 Flare (Located closest to input shaft) Maximum Pressure: 1450 PSI Optimal Operating Pressure: 1100-1250 PSI Recommended Flow Rate: 2.0-2.5 GPM