Well, after buying the 'unique' 350, I came across what could have been a major problem - wheel nuts. The car didn't come with the correct socket to take off the wheel nuts. The alloys (whether they are Nismo LM GT4s remains to be seen) have very deep cavities for the nuts to sit in. They are 21mm - so I had to scour the net for a 21mm socket with thin walls (28mm), and a very long shank - turned out to be a van nut socket So at least I can now get the wheels off to get them balanced; I have a vibration over 60mph. Next trouble was that the centre caps are held on by 3mm allen bolts and of course they didn't want to come off either. Ordered a new key to make sure it had proper edges. With any luck I am now set to be able to not only get the wheels off but can actually get them balanced too!!! Will keep you all posted, and also should be able to identify the wheels, offset etc....