Got it.

Ok, how in the world do you judge or know what HP and Carb vs. MPI the boat is? There were apparently 3 engine varieties but I can't tell which is which. A 310hp Carb, 320hp MPI, and a 340hp MPI according to the manual. I can see mine is the "Indmar Assault" and looks like a Holley carb but can't find any other clues.