Looking for suggestions and possible mods to the 2010 450. They are great stock but the one I rode had killer bottom end and then signed off pretty early. I know the GYTR head is a good option, just wondering what else people are doing to get a better top end and maybe a bit more power overall. From what I hear the tuner helps a little to move power around but I tried some of the maps but never got the top end I was looking for. Cams, porting, off the shelf heads, what are guys running?