i dont think those towers are gonna work for you, they look like they clamp to the roof, from the top of the door jam, and if thats the case(correct me if im wrong on any of this) your rack will sit right over the front and back doors, covering your sun roof(not like its the end of the world), but it wont be back over the cargo area where most people have their racks. i think it would look funny to have a rack that far forward. now if you wanted a full length rack(from the front of the roof to the back) i dont think those towers would support that much over hang in the back. -what im saying is, you have no support for the rear of the rig, those cross bars and towers wont be able to mount to the back section(past the rear doors) on your truck. maybe take your runner to a local truck and SUV shop and have them look at it and tell you what they think -its hard to say for sure with out seeing the actual tower and cross bar in person next to the truck, who knows those towers might not even fit properly on the runner. my advice would be to check wrecking yards and local classifieds for some factory towers/crossbars and go that route, they generally sell pretty cheep like under $75 and im sure you can sell your tule ones for twice that