Eagle River Wisc. held the vintage WC as well as the World Championship these past two weekends. Our 1981 Skidoo Sno-Pro IFS 440 came out on top winning the WC title in Pro-Vintage IFS 440 Our Champ 440 entry set the 3rd fastest qualifying time and had a shot at making the final for the WC , but our driver (my brother) hit an ice ridge with his tailbone and could not continue. The engines are only 440 cc. and limited to 34 mm. carbs and make 130 hp. and 70 ft lbs torque. at over 10 K rpm. -- diskvalve www.samsonracing.com