I had a extensively modified 2004 Powerworks SVT Focus. Back in the day I spent time ruminating about things small-bore Ford at focaljet.com.
Here's a link to a thread about the car:
http://forums.focaljet.com/showthread.php/549054-May-FOTM-SVT-Round-2-mysvtftoy
In the end, it wound up looking like this (6-point cage, FSWerks camber plates, and APR wing):
A local Audi guy bought it and continues to daily, autox, and track it with his kid. Ultimately, I replaced it a couple years after selling it in 2011 with a Fiesta ST. That has also been heavily modified (but it did not get a cage, seats, gutting, etc.).
This RS is going to stay MOSTLY stock. Hah. I have plans, but nothing will really happen until next spring soonest.