Thanks Chris! To answer your question, no they are not. I will let your below statement stand on its own as an answer to your concerns about keeping the mods.
I got a nicer one.. but it's more expensive since I don't want to sell it I know of two of them that has sub 10k miles.
No personal offense intended, Sterling. I just feel the full extent of the modding did seem to be down-played, and I think full disclosure is always better. No, you are right, I have no intention of buying this car, as I'm quite happy with my current '92 GPW NSX. I've had a Ferrari, another one is in my future, but the NSX is doing fine for now.
Maybe I just don't get it but to me, a "no story car" is an origional car that has always been origional and has not had any accidents or issues. Everything else is "a story" whether everyone buys into the story or not is entirely subjective. It doesn't mean anything necessarily bad or not but any change from how the car rolled of the factory line is a story by definition.
I think we are getting carried away with semantics here. If someone had for sale a PERFECT original and unmodified time capsule NSX that say happened to belong to Senna then you can argue that the car is a 'storied' car because of the special ownership. In general 'stories' in used car lingo refers to stuff that would be un-reversible like theft history, branded title, paintwork, re-built engine, mis-matched numbers, etc. This car appears to be well and transparently advertised. A proper PPI will reveal the current condition of the car which should be all of the assurance a buyer would need to make an informed decision as to how correct the car is TODAY.
Just to clear up the "warranty" issue. This car did NOT have a Comptech supercharger installed.....it had the SOS version, which was never offered as an option and would have voided the cars warranty if it still had one at the time of install. It produces more boost, and requires the installation of an aftermarket ECU. These motors were known to blow out ringlands as a result of adding boost to an already high compression motor. SOS is one of the most reputable shops around for this car.....but the fact that it had been boosted prolly to 9psi has decreased the life of this engine without a doubt.
Here is an excerpt from the PPI Science of Speed performed before returning the car to stock: 
compression test & spark plug inspection (optional): Very good condition (new: 215-220 PSI). cyl 1: 215 cyl 2: 220 cyl 3: 215 cyl 4: 215 cyl 5: 215 cyl 6: 215

 spark plug condition: OK
Listed in "general notes" on the PPI mentioned above: "In the 11 1/2 years I have been working on NSX's, this is by far the one of the 
nicest vehicles to come through the shop."
Here is a dyno run performed after the supercharger was removed, showing like-new power levels for a stock 1999 NSX: https://youtu.be/pObkuLxtSGs
The last two shops that have worked on mine told me the same thing.....lol. I think all anyone is saying is that you should disclose that the car was extensively modified and returned to stock. Especially given the asking price you are searching for. It would probably be the highest amount ever attained for any NSX sold between 1991-2017 in the USA. I also failed to mention that the injectors also are replaced with that SOS setup. And as I said on my original post......Good luck with your sale. If you get someone to pay that amount, it's good for all of us that own these cars.
It was disclosed, in the OP. I didn't include a full list (was intending to give that info to prospective buyers), but will do next time.
For those curious, the supercharger kit was installed by ScienceofSpeed in 11/2012 at 15,251 miles, and removed by them in 3/2016 at 21,000 miles. The compression numbers above demonstrate the health of the engine at the time it was returned to stock.
290 horsepower to the crank, stock. Obviously less to the wheels, as with any car. Not sure on the supercharged numbers, that's not my specialty.
The car is listed on eBay, link below. I can't edit the OP here but you can refer to the revised wording in my listing there, as well as my various posts in this thread. I hope that clears up any discussion of transparency. The car is truly in immaculate condition, I hope it goes to a good home. 1999 Acura NSX Alex Zanardi Edition | eBay
Beyond me why sellers aren't completely transparent upfront about a car's history. It's a relatively small community at the end of the day and it ALL comes out anyway. Hope the lesson was learned. It's a very nice car, GLWS.
Careful where you tread. Piston failure with the forced induction NSX is because of poor timing maps that did not retard the ignition, and / or did not have an aftercooler with high boost configurations. I had four different supercharger configurations on my NSX ... Comptech 6 PSI, Comptech 9 PSI, Paxton 8 PSI, Paxton 12 PSI. Crucial to a healthy engine is optimizing the air-fuel mixture under boost. I ran a wide-band O2 sensor and had a perfect stoichiometric ratio of 12:1 at full boost. I fine-tuned the fuel map and timing map myself. The engine made obscene power, was tracked hard and never had any problems. With the two Comptech setups, I did not have an aftercooler. With the two Paxton setups, I had a water-cooled, closed loop aftercooler.
As far as I can tell the seller has been transparent. He clearly states in his original post that the car was modded and then brought back to stock. Yep. Properly done these are very hardy motors. It's a great car. Wish I could buy it. Now is not the time for me. Glws.