These work from Yakima... not sure about Thule.
Yakima Products - LowRider Or there is a LowRider Max w/Claw 2. You can also go to the website and use "fit my car". Once you know what you need... shop around. Because I found these way cheaper on Amazon.com and some other accessories locally. These also work on Jeeps, Rav4's, and just about any other roof racks. So, they are pretty versatile.
I have the LowRiders, 48" bars (smallest that will fit), and the HullRaisers (they come with great straps). You'll also need a stepping stool or milk crate.
