I just got the Boss Seats for our sleds, I am very undecided if I like it. The fit and finish is ok but not great. the seat changes the complete look of the sled to me. The mounting is very cheap, two snaps and 5 strips of velcro. No application for a tail light. The seat does not fit the tunnel exactly, the seat tapers in the rear, showing the tunnel top. I really do like the way the seat feels though. I guess I will keep the seats and test this winter. Some of the storage panels are useless though. It may have 10 different storage areas. By the way I bought the high rise seat, normally for 400 bought for 360 each, including shipping. I believe the seat looks better on the SX dlx than it does on the Viper or SXR. Now I have to fabricate up a tail light. Al