im looking for a 3 or 4 blade SS 22P for my 200hp merc 2.5L v6 and my 1984 mako 20 center console<br /><br />im running 18p 3 blade now, and im getting about 6000 rpms, and i should be right about 5500. so i was hoping to add 2-3 mph and lowering my rpms at same time.<br /><br />just a thought