Actually it was the ASC (Advanced Sedan Concept) and ASCC (Advanced Sports Car Concept) that came after the HSC. Both of those were FUGLY. The HSC looked like a natural evolution of the NSX sans rear end. The HSV, although a FR setup, actually looks good IMO. The only thing in common the HSV has with the ASCC was the FR engine setup. ASCC was slated to be a V10, the HSV is a 3.4L V8.
Also, lets not forget the test mule S2000's Honda was testing at the 'ring. Did we ever find out what engines they were running in those things? were they MR? There was also that FR NSX that was being tested that we eventually found out had some sort of KERS system in it.
The HSV is the ASCC in race form. The HSV is based off of the ASCC and Honda used that technicality to have it allowed to race. Honda cheated saying the car was made but never went to production. The reason it has a V8 and not the V10 is that in that race class all those cars ( GTR's included ) use the same size V8.
LOL we need a second gen NSX class to get everyone up to speed as Prime has become the worst place to get accurate info!