Hi fellow Highlander owners... I'm looking to pickup a cargo box for my new 09 Highlander. A local rack shop here in Calgary actually has a lightly used (for rentals) Thule Evolution 1800 rack on sale for $100! However, I highly doubt it'll fit and allow the rear lift gate to open properly.

I didn't realize Toyota did such a poor job with the factory roof rack in regards to the lift gate.
Assuming it doesn't fit and I need to find another rack... are there any suggestions on which box will fit and allow the rear lift gate to open properly? I tried rackattack.com (their Thule and Yakima rack fit guides) but I can't tell if the lift gate will operate correctly with the choices they list for the Highlander.
I'd like the biggest box I can get and if possible (since this box will be used at most a couple times a year) I'd like to keep costs down and use the factory crossbars (which I know could limit the options)
Thanks!!