just done mine with http://www.chrisknott.co.uk/
saved me £80 against L&V who were the next cheapest. The Nismo didn't add anything to the quote either.
The club is registered with them and you can use them. You can also recommended them to anyone else but you have to tell them it's via this forum. Waiting for it to appear on the list but the guys know about the forum. Full information will be announced within the next few days. Tim from Chris Knott will also be on our forum to offer any help or answer any queries.
seem to remember the motors are quite expensive, best option is to find a Z in a salvage yard or check ebay.
Andy has one for sale but don't know if he sold it on the end. Pm him
http://www.350z-uk.com/forum/viewtopic.php?t=14221