I have purchased The 2008 - 2011 Ford Focus Zetec S rear skirt Diffuser for my car,
it came with some fitting instructions so i thought i would upload them to help others who may purchase this item from the breakers, and not know how to fit it.
Focus Zetec S rear Diffuser.pdf
Also see link below for fitting front lip:
Posting in General Chat thread. 11/11/2017