Hi all,<br /><br />I have noticed all the 90HP/115HP engines seam to be the same engine, but obviously somthing is different in the 115HP, but the Displacement seams to be the same.<br /><br />I am curious what is different that gains the extra 25HP, and can a 90HP be converted to a 115HP? If so what type of cost is involved in that conversion? Is there any information/sites about this?<br /><br />I am going to be purchasing a 90HP 4-stroke, either a Yamaha, Johnson, or Mercury, which will do fine for me, probably for several years, but if/when the time comes i decide a little more power is required, I am curious if this upgrade is possible.<br /><br />Thanks for the help,<br /><br />-TheChad