Hi Duncan,
the S2kUK stand is in area 4 Infield - I can't find any reference to the OC having a stand either - so I guess we are spread around the site. I know that there will be a Blue one on the "JDM West" Stand - wherever that is.
I did contact the organisers some time back to see if they would locate the NSX's together with the S2KUK club but I guess that must have got lost in translation.
I will be there early - you have my number give me a call.