Are there any advantages or disadantages between the Bravo I or III. I am repowering my boat and will be around the 500 HP range. I am also upgrading the outdrive and would like to know what is my best option between these two drives.

B3's are built for a cruiser hull. the uppers are the same on the 2 drives, but the lowers are different. the B3 runs 2 props.

B1 = performance hull
B3 = cruiser hull

Thank You

B3 is for heavy cruisers and ski tow boats.....twin props to get those boats on plane and moving/towing. The B3 begins to loose efficiency at speeds above 60. Its not meant for a performance boat.