I'd guess it's going into the Five-Hundred/Montego to compete with the 300C
and the Freestyle to give the crossover a proper V8 to take on things like
the (more expensive) Cadillac cross over wagon (SRX or CRX... whatever that
thing is called) and the Dodge Magnum (with "has that thing got a HEMI"
power). All three Ford products are built on the P2 Volvo platform, and all
three are begging for a V8 engine (there using a 3.0L V6 right now...
something a titch over 200 horsepower).