So I've heard this whole idea called project Rushmore. Can anyone explain what it is? I have a 2016 SGS...I've ordered stuff online and every now and then, when plugging in the info for my bike, the "Rushmore" option comes up....how do I know if my bike is a "Rushmore" bike? Can someone explain this craziness??? Sorry, this is my first street glide and still new to all the terminology.