*start rant*
Well, let me start with the rack store were dinks, said it couldn't be done, refused to order the Yakima basket case on account that it wouldn't sell if it did not work for me.
I found it elsewhere. For cheaper. All they were good for was the snowboard shaped thule deflector, that they sold me for $50 on a no return condition. (Apparently, it also would not fit, according to them. Funny, it fit just fine.)
*end rant*
So the equipment list is as such:
http://www.yakima.com/shop/cargo/gear-baskets/basketcase at $164 msrp. I got it for $80 used.
and
http://www.yakima.com/shop/factorycrossbars/universal-mightymounts at $56 msrp ($49 I dunno, the guy looked like he eyeballed the price.
The 2 pics show where I dremmeled of a piece of the basketcase so that it would fit in between the bars. I suggest laying a blanket on your roof, and supplying beer to a buddy. We also had 3 step stools for test fitments. You may not have to cut, on account of it being a bigger car.
where it fits;
Where I cut:
Some creative work on the center fastener for the thule deflector:
The universal mounts are listed as compatible with the square bar, sooooo might work. I hung the basket by it's floor, for lack of a better explanation.