Wai got a Perrin kit, which
afaik comes with a Garrett turbo. It didn't fit properly because of the LHD-spec up-pipe (The US Spec cars have more room there due to lack of brake and clutch master cylinder).
Luca, if you're looking at getting a decent turbo kit, take a look at the Full Race twin-scroll turbo kits.
www.full-race.com is their site, and mark my words...you probably won't find a better manifold/up-pipe than the Full Race ones.
Email them and ask if they are making the RHD spec kits yet, as they were supposed to be doing this for Litchfield in the UK.
I reckon a GT3076R twin scroll would be farkin awesome on your car