I had a 2002 SX Viper with a Boss seat and handle bar riser. I bought a 2007 Apex Attak. Took me a about and hour of riding to get used to the change. There is no comparison, the Apex, in my opinion, has more seat of the pants torque from zero to 100+ than the Viper. I ended up buying my Viper back and still would rather ride my Attak, he SX Viper is back for sale. The no carb cleaning, and power valve cleaning is amazing, just change the oil and grease it and ride! One thing that I'd would defiantly do is if you ride trails, set the transfer to min, spring to about medium and my dial is just about soft, and then run snow trackers. Snow trackers was one of the best upgrades I did.
You will Love it!
Nator
You will Love it!
Nator