Manual Steering to P/S 1965 Dart

Installing an '81/6 into a '65 Dart. Car has manual steering and want to convert to P/S. I know that the 64-69 A body cars use the same P/S box. Any help? Found this info online. PS27 – Small Block TRW/Thompson Power Steering Pump Brackets. For 1964-69 Small Block LA engines with cast iron water pump housings and TRW or Thompson pumps. Can be used on both A/C and non-A/C applications.