there are two ways you can add coupling blocks to the sled.one way youcould do it for a few dollars is to go to a polaris ,yes polaris shop and buy there blocks and metal inserts. drill the hole in the rear rail behind the arm and install them. the other for about 20.00 would buy two limter straps,straps the bottom of the rear arm just the inside of the bolt. then hook the other end to the aluminum shaft behind the rear set of wheels. that my two cents.
sno_pro_500