So after searching the internet, emailing Nissan, calling Mackin, and calling NISMO, I'm at a loss on these center caps. Bronze caps for NISMO LMgt4, I have two, but would like to get my hands on two more. Any information would help, I have not even been able to get a part#. I have found plenty with the o-ring, but nothing with the clips, like in the picture, which I think is the only type that will work on my rims.