I have installed this on my 03 GTX S/C. Love it. I think it is better than the block off. I guess it really depends on what you are using your ski for. But in my case with them on I get the same effect I had with the block off's except I can hook up in the turns better. At first they were hell to get on but me and my Bro figured an easier way to do it. Just get a one and a half inch hose clap wrap it around the upper portion of the holder tighten it down real good then just slightly tap it and it will pop on with ease. Of course spray it down with lube first. Hope this makes sense. Sometimes easy things are hard to explain. HA HA HA