I have a 1984 Scarab II running 650 hp 468 blower motors and either TRS drives or Bravo 1 drives with boxes. Any suggestions on what to use for props? TRS prop depth will be 8" or 3.5" for the Bravos. I am still in the design stage and can run either drive setup without moving motors and redoing transom as Bravo set up will be using driveshafts. All suggestions are appreciated.