Thanks for the advice guys, I appreciate it!

Is it a given that the plastic tabs will break

? If so, can this part be replaced and what is the part number (Or part name) that I can order from the stealership?
What I am attempting to do is to install an additional factory cross rail (luggage rack) on the front of the roof rails so that I have a total of 3 factory non lighted cross rails on the roof of my SUT. If I'm able to install this additional rail in the position I want it, I'll have one cross rail available for sale since I had to purchase two (a set). If I'm unable to make this work, I'll have a set (two) cross rails available for sale. I will post my results when finished!