I want to replace my 4.3L volvo with a 5.7 v-8. I know the engine will line up with the outdrive no problem. I'm told that the 4.3 outdrive is a different ratio and hard to prop with a v-8. I don't mind replacing the motor, but they want another $3500.00 for an outdrive. I wouldn't mind, but the boat isn't new and my outdrive has many years left in it. There has to be someone else out there who has done the same thing. Does anyone have a solution for me?