Seems there was no auto for The U.S Market at least, JDM, I've no idea. One of the problems is there appear to be 2 versions of The Nismo. the 2006 DE engined one and the 2007 HR engined beast and its difficult to find more than a handful of photos of the interior. This one does seem genuine though, I believe there was a separate production line for the Nismo so maybe this one was a one off special order for someone with connections to Nissan in The U.K.
Yes, that rear end is pretty dire really.
Pete