The Thule 822XT is a simple, well made and easy to install rack. I have mine positioned where the bar is over the bed post holes on my 2009 GMC Z71 1500 Series. I have a set of the OEM GM retractable tie downs that L brackets set on top of so no starching the bed paint, not that it would but could I suppose. Holds two bikes very securely and as mentioned above in its positioning there's enough space between the Thule bar and cab that both tires fit there and I use rubber tie down straps to secure from rolling back and forth.
The only suggestion I would have is that they ship a metal adapter for the small square end of the bar rather than using a rubber spacer.
Thanks backcountry for the prompt shipment an excellent sale price. *** Have the Shipping Dept. also tape the ends of the Thule box too *** Mine arrived alright but one end of the box was nearly open that would have allowed the rack to slide out of the box in shipping.