I had one the same as yours back in 2005.
Got an aero kit, KW coilovers, Alta induction kit, Alta smaller pulley, Alta control arms. Was about 210bhp and handled like a go kart! Brilliant wee car and definitely surprised a lot of 'bigger' cars - Leon Cupra R's, Type R's, standard focus RS mk1/ST etc. Wish i never sold it but it cost a fortune in fuel! 18mpg was the best i got from it.