so where are Holdcroft and MrF getting their bluetooth kits from?
the key word is INTEGRATION: it's the same word used on the previous literature (do you really think they re-write all literature, or maybe just change the bits that need updating? )
pre 06 cars have HANDFREE INTEGRATION, now 06 cars have BLUETOOTH INTEGRATION simply because they (NMGB) paid THB BURY the money to develop the bluetooth cradle for the Z instead of trying to keep up with new phone models like they tried to do (and failed) at launch of the Z in the UK.
Also, where do you think MrF and Holdcroft get their pricing from? there's part numbers and pricing list (and margins, which apparently are tiny on this item) available on Nissan's system...
other key thing: does it say anywhere on the brochure (pre 06) that the cradles for the handsfree had to be purchased? nope, same as on the 06 brochure.