My best times with both on Comfort Soft tires at Mid-Field: 1:20.806 - 468 - Honda NSX Type R '02 1:21.824 - 466 - Mazda RX-7 Spirit R Type A (FD) '02 I tested an Acura NSX '04 and despite weighing 160 kg more than the Type R, it was only 2 seconds slower at Mid-Field. You theoretically could strip any NSX and upgrade the suspension to be just as fast as the Type R. NSX-R is 4 mph faster than the Mazda by the end of the straightaway, reaching 144 mph. The FD is more stable and easy to drive fast, while the NSX requires a slightly delicate touch when accelerating through the turns to keep the back end from sliding out. Don't get me wrong, it's extremely well-balanced and not oversteer-happy at all. It's just that with the RX-7, you worry a lot less about the back end coming around. What's really nice about the NSX is that it's naturally aspirated, so there's no lag or high-rpm power drop-off to think about. RX-7 1.3L 292 hp /6,500 rpm 245 ft-lb / 4,500 rpm 1,270 kg (2,800 lbs) NSX 3.2L 290 hp / 7,100 rpm 237 ft-lb / 5,500 rpm 1,270 kg (2,800 lbs) Both weigh the exact same! NSX has more than 2x the engine displacement, 2 fewer horses, and 8 fewer ft-lbs of torque (turbo powah baby!) I have a feeling the NSX would be faster at Tsukuba, but I'm curious so I'll have to try it out myself. My vote goes to the FD RX-7. The best RX of them all. Thanks to Mazda for building it.