you'll probably want a 685 kit. And I didn't like the racer front end(suspension) and would go with an rmk(dragon)front end or drop spindles from brad.
Meathooker had a 685 with the 121 track and rmk front end, it was so fun to ride as a short track that I want to build another.
Oh and we can hook you up with feethookers for this sled too, the IQR running boards hold alot of snow and are so wide you can't comfortably stand on the outside grip edge.
