I think I remember seeing something like this in the "bu" or Centurion catalog. If I remember right they used them under the transom in some configuration.
2007 Prostar 197 TT Edition, LY6 400HP, Mini Tower, Heater, Perfect Pass
1997 Prostar 205, 350tbi, Power Slot, Perfect Pass, New Dimension Tower, Shower, Heater, Clarion Stereo, LED Interior Lighting
Objects in the rear view mirror are losing