Having looked under the bonnet and the pictures on the instructions for my cold air intake, it looks like it was designed for an earlier model Focus as mine is different:
Turbodiesel, was that similar to yours?
I got my springs and intake in my boot, waiting on the swaybar, links and camber kit to arrive, then waiting on the cooler then I'll take her into the exhaust shop to see what they can do for me.
Also, anyone here with an LV XR5/RS, can you post a picture of your airbox/intake, are they the same as the TDCI ones?