So pretty much exactly what the title says. I have some left over pieces to my rack.. and with buying a new car the towers I have (rail grab) won't work. Here's the deal, I'm going to have no use for the current towers I have right now. They are in a little bit of a rough shape, but they still work as needed. The "adjustable" lever which goes on the inside of the rail wasn't so adjustable as I went to change it and the bolt snapped. Sounds a lot worse than it really is. Just move it up and down by hand then tighten it down real good. I have made a few trips up to North Dakota with it like that and nothing loosened. Now, what I'm going to need is a set of the Q-Towers to fit the car that I'm going to be purchasing. If you have the Q78/79 clips to go with it, I would also like to buy those. I would be interested in buying your towers, or trading for mine + cash if you are looking for the rail grab system. Best contact is just by PM. Thanks, Dan