I need to replace my outdrive due to heavy corrosion. The boat is a 2003 Maxum SE 2400 that was recently upgraded from a 5.0 to 5.7 V8 engine. I need assistance figuring out if I should order the original 1.62 ratio that came with the factory 5.0 engine or go with the 1.47 ratio for the installed 5.7 engine. I believe the 5.7 engine is rated for 290 Horsepower. I'm looking to get best overall performance and reliability. My goal is to maximize the life of all components. I hope I never have to use sea tow, I'm terrified of getting stranded out at sea. lol. Please advise.