Hello I'm new to this forum, so I'll apologize in advance if I mess something up. I just bought a project boat - a 1999Larson SEI206 BR. The current engine and manifolds are cracked. It runs but thats it. Also electric fuel pump doesnt work. So i would like to swap out the engine, and I'm thinking of going to a 5.7 (350) to get a little more power. I've heard that I can use a GM truck motor - 4 bolt mains and swap all the components from the 305 to it. I'm not sure what year engines I can use, and what about carburation.I'm looking for any input as i only want to do this once. Do I have to remove the stern drive unit to pull the engine? Lots of questions - need help with answers. Thanks