Hello,
In the two plus years that I owned my NSX (I live in the LA area), I have not heard of any planned NSX event for this race. That does not mean that there is none, so hang in there and see what pops up. However, in October at the ALMS finally at Laguna Seca (Monterey, CA), Acura has for the past two years sponsored a supper nice corral, including spnsored lunche, a private tack-side tent, other festivities, and the chance to participate on the parade lap on race day. This a great event! Year one there were around 100 NSX's. This year there was around 80.
Best,
Mario