You can get the wheelhub at
www.carparts.com.Part number 512024 for $54 bucks.
You will need a new hub nut as well as once you back it off, you have to replace it.
You should be able to tell which one it is. I folded down one of the split seats and had somebody listen back there while I drove around.
You hear the sound after about 30 miles/hour then it gets louder. It goes away when I swing to the left on a road but comes back when i drive straight or to the right.
If you private mail me with your email I will email you some drawings and procedures.
Labour for 1 side I would estimate is 1 hour, for both sides 1 and a half tops.