if you have a napa around you, the'll bore the cylinders for 40-50 a jug. i assume its on stock bore. if the insides of the jugs look good, not deep scratches, order a .10 weisco piston kit from ebay, www.rockymountainatv.com or www.denniskirk.com good deals you can get that for about 150, like motul said, def get a clymers, off ebay or at ur dealer, there runnin cheaper everyday, prolly 25 at the most in most placesits pretty straight forward, if your heads screwed up, scan here or ebay for anouther stock head replacement, and get it milled by boonman, or get a noss head from dlnoss, both ways you get performance, good luck