As Number9 noted, Tamiya discontinued the "stock" NSX shell a few years back. It's quite difficult to get your hands on one. Every once in a while, I'll see a painted one on eBay going for about $40. Also, it had the 5-spoke OEM wheels. Actually, they weren't even true wheels. They were more like hub caps styled like them that were mounted on the Pan-style chassis wheels and foam tires.
If anything, these newer 7 spoke wheels look pretty close, but they're scaled for their 1/18 Micro RS4 chassis, and the body is styled more toward the GT racers.
I still think in 1/10 scale that the Hotbody shell looks better than the HPI shell. I think HPI took far too many liberties in their 1/10 body, but I hear it's a good handling (i.e. aerodynamically efficient) body for racing. Before the Stratus body came out, many r/c racers recommended it.
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1995 NSX-T
1999 3.2TL
2001 Odyssey
1992 SC400