I was at this little pro street shop in my town getting headers with my uncle, and this guy had a focus out front for sale - $12,000 or something. But I saw some chrome in the wheelwells and looked under there and the thing had headers. And there were no CV joints, transaxle, or anything. There was a Ford 9" in the rearend. He came out and popped the hood and I nearly shit myself - a damn carburated 347 (bored and stroked 302) !!! He fired it up for us and it had that tinty flowmaster grunt to the exhaust, and when he wound it up, the whole car just torqued sideways. What can be cooler than a sleeper SVT Focus with 410 horsepower, hooked up to a Tremec T-6 manual and 3:50 gears

The owner said that there's a company that sells kits to do this. You supply the motor, they supply the the Mustang II front end and 9" rear, driveshaft, and headers. That is one bad little ride. Shame I don't have twelve grand

Click the link below. They call this the "ATI Terminator Ford Focus" - 459hp supercharged 4.6 DOHC mustang motor

The bottom of the article says:
SVT Focus: $19,205. SVT Cobra: $36,200. Running bumper-to-bumper with Porsche Turbos light after light: Priceless.
http://www.sportcompactcarweb.com/roadtests/0404scc_ati_terminator_ford_focus/index.html