The Rev Tent can mount to the 47" or wider Sherpa racks for various vehicles.  The rack length needs to be at least 84" if you want to open the tent for sleeping.   You will need to double the amount of cross bars to offer the proper support to the tent.   When ordering your Rev Rack Tent, choose OTHER as the mounting option.   Your Rev Tent will ship with the Rev Straps by C6 Outdoor.    

If you want to use a smaller Sherpa rack, or don't want to purchase additional crossbars, you can always use the Rev Platform to mount the Rev Tent for sleeping on your vehicle.