Those part numbers, 516003 and 517007, are for the bearing assembly only, not the hub. You'll need two of each to do the whole car. If you enlarge the photo you'll see the disclaimer, it's just a representative photo, not of the actual parts.
Personally, I would not put Timken bearings on any of my cars. BCA, NTN or Subaru bearings would be my choice.
Go to
http://www.rockauto.com/ BCA bearings are priced as follows:
516003: $54.89
517007: $41.79