All you need is the CrossRoads, they are super easy to install. 280.00 for feet, bars and locks. 15-20 minutes Max. install time. I have them in stock and ready to go, I can do it any day this week while I am here with a heads up (today through Wed). We dont generally charge install fees but do appreciate tips and/or beer for the favor
4 Runner racks are pretty easy too, not sure which one your friend has but nothing Thule does is really that hard.