I swapped out my lower unit that was leaking water into the gear oil with a good used lower unit. It sounded different after the swap, and I realized it was revving slightly over 6,000 at full throttle. I had a 12 1/2 pitch prop that kept me in the 5,300 range with the original lower unit. I switched to a 13 1/2 pitch prop that I had, and it now runs at about 5,700 with two people with the new lower unit. Does a 14 1/2 pitch prop exist for these motors? The boat is a 1401 Bayliner. Thanks!