Interesting thread and even more interesting opinions and viewpoints. I'm not sure if I can give an unbiased opinion but here it goes.
Track car era:
I have been fortunate enough to have had my car at every version I wanted (Street, Track, Race) and have taken it as far as I wanted to in every form. There were other cars available but I stayed true to my passion for the NSX.
As far as tubo's original question goes, I have just the opposite question. I don't understand why more people dont' use the NSX for their track/race cars. My reasoning for this is that at whatever performance level you are interested in, the NSX can compete. I do understand that it takes additional dollars to do this but the cars that have been compared to the NSX have some pretty hefty price tags attached to them and are great cars but with the current value of the NSX and the aftermarket support, you can have a car that meets and/or exceeds that of the said competition. When my car was in its track form and supercharged I had a great time running with the p-cars, F-cars, Vipers, L-cars. Even the cup cars and challenge cars. It kept up easily and in most cases beat them and did it reliably. Yes, there was a cost involved but in almost all cases it was less than the competition. Maintinence has also been alot less than the others.
Race car era:
Shad and I entered our first season with a new race version and after a full season and two classes of racing I can tell all of you that compared to other cars we race against that the NSX is a reliable cost effective race car. As Billy has previously stated (AND I AGREE) , FXMD and us have built cars for different purposes but have had great sucesses. We use the stock suspension arms, pickup points, hub assy's, etc. We competed against cars with FAR more $$$ of investment and won! Some of the top Time Attack cars Billy has humiliated (Dam him for being so FAST!) have several times the money invested and drivers that are amazingly talented. I can't think of to many cars you can do with and do it reliably. In our class I raced against many cup cars and other than the World Challenge bunch (that was so much fun) we prevailed. So I guess what I am saying is that in stock form the NSX is undersprung, under braked, and underpowered. With the current cost of an NSX and the available support like Shad @ drivingambition.us and others, you can have a competetive car @ any level (please don't use miatas as a comparison) for the same or less money. You get exclusivity if that's important to you and you can have the Honda reliability to boot. Why would you want anything else??? Guys, understand that these are just my personal experiences and opinions. The NSX is an AMAZING car even today. I have no intention of converting to anything else. For the $$$, nothing else comes close for me! Thanks, Kip