well mani is fitted now, was quite easy appart from one bolt that was rounded so became a pain in the arse other than that it was a piece of piss. didnt move the fuel rail, didnt unplug anything from the throttle body, didnt need a longer bit of vacuum pipe i just moved the sensor holder. simply undone the bolts and banged the new one on. first impressions are that there isnt a massive difference but i only went for a quick drive to check it was working. will give it a test tommorow and take a pic. it did sound pretty cool though. hopefully it is as good as everyone is saying, fitting was easy though.