Brad,
You will find that most NSX owners are more than willing to do this. As a matter of fact, and I think I speak for most owners, we look forward to the opportunity to view available cars. I am currently in the process of searching out one for my brother. And during the last week or so have looked at a '92 in North Canton, Ohio with 1400 miles on it. (Yes, 1400 original miles). Over the weekend I looked at another '92 with 22k miles in Pittsburgh, PA. And tomorrow I am going to look at an original owner '91 with 13k miles on it (located here in Raleigh, NC). All of these are red, stock original cars. I travel on business throughout the eastern USA, and as a result I have the opportunity to search out cars during my travels.
Good luck. If you have some specific year, color, modifications etc that you are looking for, let us know and we'll keep an eye out for you.
John in Raleigh, NC