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Message: <blockquote data-quote="Johny25" data-source="post: 267459" data-attributes="member: 7791">I believe I spent $115-$130 total to mod my 9.9 into a 15hp. Of course I did all the work myself so that kept the cost down. At the time it was well worth it to me to get the boat on plane versus $500-$1000 for another motor. The difference in the motor was very noticeable. Went from not planing at all to doing roughly 17mph. But if I were you, and you wanted more speed I would hold out and get at least a 20hp from 1985 or newer. If pre 1985 then go at least a 25hp minimum. Anyway I don't want to get your post off topic...... I really like the setup you designed and it has even got me thinking a little about re moding mine maybe?  Did you reinforce after removing the middle bench?</blockquote>