Thule's 542 raingutters kit allows you to mount Thule gutter feet on vehicles without gutters. The kit contains four inside plates, four rubber protectors, and four outer brackets, along with bolts, washers, and nuts. You can mount these raingutters flat against the roof, or vertically on the roof side.
Note: Installation of this kit requires drilling holes through the roof of your vehicle. Crutchfield recommends using a professional to install this kit, unless you have extensive experience installing car equipment.