My daughter's 2006 Liberty is making quite a howl particularly noticible when on the highway at speed. Sounds like it's coming from the rear and assume it is wheel bearings. Looking at the auto part store online catalog, it looks like the rear just use stand alone wheel bearings while the front use an integrated bearing and hub assembly. Is this correct? I found a post showing replacement of the front, is there a good thread showing steps for rear? She has 160k miles on the car so I'm going to replace both sides, was even considering replacing the front hubs as well, opinions? Also considering replacing the universal joints on the driveshafts, although haven't looked into the process for that. Is it straightforward like most U joints or different? I do most of my own repairs but haven't done much other than breaks on the Liberty. Tips and comments appreciated.