Swardy,
I too have a 1.6, a 'Chic' ltd edition. I'm trying to make it the mintiest of minty mint versions of the 'Chic' there is (with maybe one or two subtle mods, such as a K&N panel filter, cat back replacement exhaust, MP3 wheels etc)
If you want performance, do as other posters have suggested. Save the cash, get an ST170 or MK1 Focus RS. Handy if you have a garage if you get an RS depending where you live to keep it out of the way of covetous theiving eyes.
If your keeping the 1.6, just keep it clean and use it as a cruiser rather than a racer lol