Having another look at alternatives ...
These wheel arch liners may be another option.
http://www.ebay.co.uk/itm/10x-11mm-...585280?hash=item1c598e5880:g:ftkAAOSwQTVV-Yc5
Cut the end off and expand the 4 legs out a bit with heat. Plug the centre ( between the legs ) with hot melt glue ( or similar ) to provide squeezing resistance ( so they're a good tight fit ).
EDIT : Check the head hasn't got some ugly moulding or fitting mark if you want to try these.
These wheel arch liners may be another option.
http://www.ebay.co.uk/itm/10x-11mm-...585280?hash=item1c598e5880:g:ftkAAOSwQTVV-Yc5
Cut the end off and expand the 4 legs out a bit with heat. Plug the centre ( between the legs ) with hot melt glue ( or similar ) to provide squeezing resistance ( so they're a good tight fit ).
EDIT : Check the head hasn't got some ugly moulding or fitting mark if you want to try these.