Aircraft Model(s): PA-32( )( )-300 Lance, Cherokee Six. Applicable Engines: IO-540 Series. 1 - STC Paperwork SA1791GL, 1 - 3-Bladed Propeller HC-C3YR-1RF/F7663R, 1 -Polished Spinner 835-47P. 78 inch diameter 3-bladed aluminum hub propeller.