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Message: <blockquote data-quote="Johny25" data-source="post: 281685" data-attributes="member: 7791">I don't think the cowlings will match up. If I remember correct the 87' lower cover will be narrower than the 82' top cover. As for the carburetor, the difference in the two would be the 82' is a choke style carb and the 87' is the primer style. With a little ingenuity it can be done though.  To make the 87' 20hp into a 25 I believe all that has to be done is bore out the intake manifold hole to match the back side of the carb where it mounts to the manifold. The intake was just restricted to get it down to 20hp. I know in 85' that is how they got the 20 and I am pretty sure 87' was the same. Remember throwing the 35hp carb on there will not get you to a 30hp. You have to get the larger intake to accommodate the extra fuel being thrown into the crankcase. More fuel + more air= More HP  <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin    :D" loading="lazy" data-shortname=":D" /></blockquote>