I just bought a 2002 ZR 600 carb great looking sled had 2300miles on it now has like 2600. Anyways I was wondering if I Should do a Boss seat or Extened the Tunnel and Skid next year and make it a 136" I honestly dnt mind the 121" and think it gets around great even in back country conditions but I want peoples ideas I was gonna get a Tracks USA Extension Package comes with everthing including track and hardware. Anyone have anyexperience with there kits or parts. If so post pics of your sled and how about boss seats or seat wedge??