Hmm, I'm thinking there is more too it than that. Like perhaps drag shocks for one as Evolution mentioned "tuning" or "dialing in" the suspension. There is little to no tunning to be done if its a stock suspension with aftermarket control arms. Unless maybe they are adjustable and they are playing with pinion angle?
I just think a 1.4 or 1.35 60' is asking an aweful lot for a street suspension compromised for ride and handling. Maybe I am wrong, but I think there are some suspension changes that have not been mentioned. Things like sway bars, shocks, and springs maybe.....
I was wondering that too, otherwise ford has made the most amaizing car ever and could produce it unchanged for the next 10 years