Not always necessary to use Torx driver - the right size ordinary s/driver can possibly work. Also not necessary to remove rear wheel arch liners. Remove lower outside screw (holding liner to bumper), carefully hold back the liner until top bumper retaining screw revealed - and remove.
Remove the other wheel arch retaining screws, and the top two screws (located along the top rail when tailgate/boot lid lifted) and bottom two screws and Bob's your fathers' brother!
Sometimes difficult/awkward when replacing bumper when the two outside guide pins have to be located - ideally a two person job.
Roger, September 2008
