thanks for the links guys, I needed it urgently as my car is with them now so I have gone with the Cobra. As for the rusty one thats on there now, its the original one that came with the car and I believe them when they say its a state. I do trust these guys, friends of friends and I have been using them for a long time.
Thanks for the concern though, appreciated.
AMT your right, it is a piece of mind! I plan to have my Zed for a while..