I talked to the guy at the Line Shack today about my 08 Dragon 700 Switchback with 2" track and he said the only thing they are doing is going to a 58g weight. I am also changing the gearing to 20-41 based on the Polaris manual.
By the manual, you should run 20-41 gears, 54g weights, and 56/42-.36 Helix for 8000-10,000 ft. You will use the same 76 pitch chain.