There are aftermarkets that will work. I assume on your buddys sled there is no seperate trunk. It is in the seat it self. Should be able to find something aftermarked. In my case my wifes 07 blizzard had the plastic truck, which we want to keep so our option is ski doo brand, so all I have to do is cut two small holes in bottom of trunk and mount the hardware. Kinda hard to find because of price. New seat from the dealer is around $600. Alot of green just to take the 5 year old out a couple of times for a hour or two at a time. But momma want one so I have been looking like crazy to find a used one to save some green before the snow flies. Used ones in good shape are going to be in the $300 range. Look up seat jack. It might work on his sled.