Modifications
I purchased the car in October of 2003 from a guy in Ashland Oregon, he stated that he had the complete records on all of the modifications and would be sending me the records. He has not done this to date. Here is what his listing stated, ""A rare find and truly one-of-a-kind! This is the cleanest, most immaculate 1991 Silver NSX you'll ever see in the USA. The car has never been driven in the rain, or smoked in, or raced, and it has always been garaged and covered.
It was voted the nicest 1991 NSX by the president of the NSX club. The car is in perfect mechanical condition, immaculate in and out. The car is not in snap ring range and has all original paint and upholstery in perfect condition. It has all RM Racing modifications, all-aluminum Work Wheels, 100 hp on demand nitrous with heater, and too many upgrades to list.
This car is one of the finest NSXs and the most outstanding 1991 Silver NSX you'll ever find with only 29,500 original miles. The car is as spectacular to look at, as it is to drive. It is truly a work of art! "
Hope this helps, I have more pictures that I can send you including detailed photos of the engine compartment. Let me know if you would like them sent to you. I am not very knowledgable about the NSX, it is a great car to drive and I have had all the little problems fixed since I have owned it. I can produce those receipts. I am selling due to health reasons, otherwise I would keep the vehicle.