The trucks/parts wanted section would be the best place for your post. You can also watch the parts for sale section for a 10n1 to become available.
Another chip you might want to consider is the Velosyty chip from TurboTweak. Eric would also recommend that you have a scantool such as Scanmaster, Tunerpro, or Datamaster. Make sure your truck has no issues and runs well stock before you start making modifications.