200hp optimax on 23cc?

[osprey]

hello everyone,

I tried a search, but so much stuff comes up that doesn't answer my question, so here is the question. I'm running a 1998 merc efi 225hp and am marginally happy with the performance. I can tell it is just slightly strained. fuel ecomomy is not good. My buddy has a 2002 200hp optimax that I could slap on. It has < 400hours. Would I be crazy to do it. I don't care if I loose a little top end, or if it gets on plane a little slower. I'm thinking fuel ecomomy. Will it still keep me up on plane at say 35-40 mph going from a 225 to a 200hp

Thanks