ahhh if yours is a JDM you will need to source them from else where. THe ones from Holdcroft are UK spec.
May be worth giving Mike (Mr.F.) at MJP.
http://www.350z-uk.com/forum/viewtopic.php?t=2744
Make sure you tell him yours is JDM as he can get UK spec ones. Don't know who else supplies. Maybe someone else does. Sure they must be plenty of sellers though.
Not my car but a picture of some. They are not easy to photograph to get the best effect.