hi lrd i have a 09 mxz 550x she gives out 87 hp stock according to the site and i would like to know what you think of a 1.75 lug track and mtx skis for the sled and some performance parts i can get for my sled i loves the 550 motor an i would like to know what i can do to make her more powerfull and what you think on my choices to change her to a backcountry sled