Wouldn't bother with an FSE power boost valve they do next to bugger all. I'd start off with a rolling road run to make sure you are making standard power and that there are no faults. From there I would sort the breathing by fitting a K&N induction kit and a proper exhaust system (Magnex, Scorpion etc) from there a get the ECU chipped. I beleive you can fit the throttle body off a Mondeo 2 litre but not 100% certain of the exact benefits of this.