Thats what i was thinking ,
at the end of the day it will have a CPS , coil pack , most . Charge temp sensor and aux air device are on the inlet manifold , ( if u use a escort zetec , or FRST one )
water temp will be on the thermostat housing . thats just about it .
FRST EECIV should plug straight into that lot and away u go . ( sort of )
I know the head must be very similar to the zetec ones as i make a couple of stainless bits for them , Focus 2.0l stuff fits the RS etc