As I said, I wasn't that sure

They did put it onto the UK 2005 car, WR1 was the first for a while to have it as standard fit. My STi8 with PPP which is 1 month older than the WR1 didn't even have it as an option

I have only ever seen one UK300, that one had it! Unless it was an aftermarket fit?

Best bet is as CJ Said, buy and mod to your spec.

Again, not like I'm a rep for Saj or anything, but speak to him or check out the website http://www.japperformanceparts.co.uk/ . He may have something just begging for this kind of thing. Remembering of course he is in the middle of building the mother of ALL drift scoobies