I have a 1977 115hp v4 crossflow with the original power tilt. The motor and pump are cactus. I have the opportunity to buy a mercruiser pump very cheap. My question is does any one know how easy it will be to retro fit this pump? I can install it inside the boat. Are the fittings the same or will I need to get new hoses? Can this be done or am I wasting my time?