So I got the boat running pretty good right now. Got the miss issues worked out, timing was way off. The boat runs good now, mid to low 50's with a 19* prop. Seeing as memorial day is 2 weeks away I am debating on what to do. The motor I am building is a rebuilt bottom end from another guy. I bought it off a guy from craiglists. Said it had 20k on the rebuild. He went 30 over on the pistons. I have never heard this motor run. I turned it over when I got it and everything seemed fine from that perspective. I put the new cam, new heads, new intake and carb on it. I am getting some manifolds from Tommy this weekend so I can have a complete motor, just drop in ready. Now, should I risk pulling out the 1st motor and dropping in the higher hp one and hope everything is ok with it or should I leave 1st on in till after memorial day. Memorial day is a big boating weekend and I do not wanna miss it at all. I can pull out a motor in about an hour. Should I risk it and do all that work or not? Thoughts???