There are a couple massive rack threads in one of the suforums, I think interior/exeterior mods. Your choices are Thule, Yakima or OEM, all can be purchased so they use the threaded holes under the rain rails instead of messing with the door jams. Go to a ski shop, EMS or even LL Bean to see the parts and get some advice. Be prepared to spend serious money for Thule or Yakima, OEM bars and feet can be had for ~$160 but they do not lock to the car.
I have the OEM bars, they are fine. A bit flimsy but I only use them for boats as I can fit snowboards inside the car.