OP, surely you haven't tried that hard. Z1 Motorsports would have to be the largest US seller of V35 stuff although they do smash you on shipping for orders under $1k.
Whilst I have a set of Berk HFC's on my car (straight bolt on, no probs and surprisingly a very high quality unit), I do agree with Scott. Wouldn't be difficult for a decent fabricator to make up a nice set of HFC's for you. Could work out cheaper too.
V35's really are an easy car to work on/with. Anyone that tells you otherwise shouldn't be let near a car.
Also agree on that Stillen exhaust. Sounds nice but what a pain in the arse POS to fit.