I have a zetec s I uprated the rear anti roll bar easy to do and made a big difference to handling. I had a standard focus for the day and I could tell a difference into the corners and that was before the roll bar mod. I would do the front roll bar but that's more effort lol. Plus I have noticed the zetec so sits slightly lower than a non zetec so version too. I have mud flaps on but not the standard ones.