I have a 1992 33' Sea Ray Sundancer with Twin 5.7 Blue Water Mercruisers with 1:50 Borg Warner V-Drives. My Question is what would be the Best Prop Diam. & Pitch for this Boat? I've read the Boat came with 17 x 16c & I've also read that with these 5.7 it also came with 16 x 15? Thanks ahead of time for any Help!!!