Neither buy a 2.0 mk1 focus and mod it!!!! Its cheaper to insure than a 1.25 fiesta and with a few little mods it will eat both the st170 and the fiesta st........

With all mods delcared a 2.0 focus was only £900 for the year and on a totally std fiesta mk4 1.25 it was £1,200 per year!!!