I remember this being a popular mod with the 350 guys and if I recall correctly I believe the handles on my 350 were the same as on my 370 (in so far as the material goes at least). That being said, there is a wealth of information on the my350z forums.
MY350Z.COM Forums - Search Results
I see one major difference of course and that is the intelli key lock button. I'm not sure if this would pose a problem or not but it is something I would be concerned about.