Originally Posted by hogdog

There's only one turbocharged ST170 as far as I'm aware and that's pushing 400bhp now. They can be great turbocharged but it isn't cheap, same as any other zetec really, the cost largely depends on the spec and the amount you can DIY.

You're looking at a minimum £4k.

BTW, I wouldn't touch a £7k RS with a barge pole, most of the cheap ones are cat C and D write-offs.