I am going to be getting both the silver cross bars and the side running boards fairly soon for our XC. I do plan on ordering both online to save some dough from dealer, but I am wondering if anyone has installed either of these accessories themselves and how hard they are to install? I assume the cross bars simply snap into place with no tools required, and I can't imagine the running boards are all that difficult either....so long as the holes are pre-drilled. Any input is appreciated! Thanks!