I know from the book Datsun Z Super Profile that 1 was definately imported. At the time of publication (1986) Luke Borg owned one, I dont know if he still has it.
There wasnt much difference to the 240Z body wise apart from wider bumpers. It had the L28 with Fi and the centre consol was modernised a bit due to complaints of the difficlulty of setting temperature settings on the 240/260. Oh and I believe they all were left hand drive.
G