I had the same in my mind, unfortunately I haven't got the orginal ones.
Can someone give me idea where can I buy some second hand ones, just please don't send me to main dealer, the prices are horrendous! I have sent a request to 1stchoice.co.uk 2 weeks ago, and the didn't came back to me with any quote.
I would like to get the 2006 model ones, my friend has got them on his 350Z and they work great.