I am not familiar with NSR cars. I did not run the NSR Mosler or NSR Porsche 917 series and have no memory of the Modern GT series. The Modern GT race reports said I ran three races in it but my car was not identified and I did not recognize any cars in the single race photo; maybe I ran a borrowed car. The primary problem with my Corvette in this series seems to be trued tires. The car chatters a lot with what appears to be out-of-round tires. The NSR wheels seemed to be a snug fit on my P & N truer and I had trued them until they were butter-smooth, but on the track they bounce. The initial problems seemed to be with gearing and weight placement. After experimenting with weight placement and ordering and trying more NSR gears, I was able to get the car to handle much better, but the tires bounce. I tried the wheels/tires on the Hudy truer at the track but the wheels are looser than they were with the P & N. Very frustrating. I am going to order another set of wheels and tires and give them another try.