new number
The demo we rode had the old belt on it, and the rep said either will work.
I don't know why they would want to go with a softer belt, the current one is rock solid, I have 2540 miles on two belts. Last year I swapped them out about every other ride, but this year I just rode the thing. Same belt all season. IMHO I think either belt would be fine. I asked my dealer if I could swap out my new xtra I have for the new number and as they are the same price, and I still have it in the cardboard, they are going to swap me. I might wait till the new sled gets here, and ride it a bit to make sure we don't have a 2008 mid year change back to the old belt kind of thing.......
safe riding!
Mark