Just thought I would revive this as I have been away for a few months. I was nearly swayed by a Golf as the Focus was starting to seem a bit bland but I saw an ST and it restored my faith. Anyway it got me thinking.
Can you get a 5 door body kit to make it ST like? I really like the front end of the ST but if I got that changed then the rest would have to follow as it would look a bit silly.
You could create an ST replica,
St's were available in 5 door form, and share the same side skirt shape from 2006-2010 which are the same as the zetecS from 2008-2010
For mk2 st just change the bumpers and fit some side skirts, perhaps wing mirrors too.
You could change the front to facelift 2008-2010 you would require,
And of course the bumper but all 100% compatable as the chassie is the same from 2005-2010
May be cheaper to purchase a mk2.5 ST replica though,