“I have the skycamp 3.0 and three shepherds. I first mounted it on a 2013 Cayenne. Didn't need the extensions at the time. Having three large dogs I opted for the HC steps to prevent any climbing issues. After a few months I took it off that and installed it on a Hummer H2. Being a lot taller I bought the ladder extension. My dogs now fly up the ladder with greater ease! Easy to install and remove. A perfect addition to an already great product.”