I was gifted a ’60 Sea King, model GG8823A, 15 HP that reportedly has a blown gearcase (I haven’t looked into it yet). I would like to know which other OMC motors would have interchangeable parts; ie: ’60 Evinrude Fastwin/15032, 18 HP; or Sportwin/10020, 10HP? Or Johnson FD-14, 18 HP; or QD-21, 10 HP? Thanks for whatever help I can get!