It's possible to have "line-trial" cars and that's what you probably have.
They'll build 20 or 100 cars with a different spec part and see what warranty issues they get etc etc.
According to the tech specs, the difference from the Mondeo to ST150 spec is/was deletion of EGR valve, deletion of swirl tubes in the intake manifold and coil pack and HT leads on ST150 ilo coil on plugs for Mondeo.
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2011 Focus 3-door Zetec 1.6 TDCi.
Previous <img src="/images/graemlins/stemo.gif" alt="" />s - 2006 Panther Black & 2007 Red. Gone and quite forgotten <img src="/images/graemlins/lol.gif" alt="" />