skhell mate, i'm not trying to tell you not to go ahead with your plan, not my place, i now understand that importing will prob cost as much as engine swap, but saying that if you were to swap a 200 engine, the 300 would probably be your easiest option as its fitted to the same engine bay, it will still come with it's own problems i would imagine, but you would not have to engineer out things that the likes of Stav had to with a engine coming from a totaly different car / engine bay.
Another option may be find a good 200, then wait your time till a supercharger comes up (because there is always one comes round every now and again) and fit this, going by Ormi's recent addition this is a very easy install in comparison to engine swap. would this be an option or would it be a non - starter like you said the turbo would be???