My 89 black max 150 2.0l grenaded few weeks back.(litteraly tons of Carnage)I bought a 94 black max 175 2.5l to repower it. What's the weight dofference.?and will my boat hold it safely? Coast guard plate is missing but my transom is solid and I'm adding a transom plate as well. My neighbor (Mr know it all retired boat mechanic) says it's too big for my boat and will mess transom up.i dont believe him but wanted to confirm its safety on here.any input is greatly appreciated