Not to bring up another non-related motorsprot, but the point RACECAR posed and what Toronado stated in reply reminds me of the Pontiac Firebird used in IROC (or as someone called it on "WindTunnel with Dave Despain," the International Race of Chumpions). The Firebird has been long gone (sadly. I loved those damned F-Bodies), but they are still used in IROC competition.
I don't know what all the pictures from Round 2 are, since I don't have a good home connection. I still find the Mooncraft Shiden one of the most unique race cars. It's a GTP obviously downtuned to comply with GT300 specs. The Soarer/SC430 is a car I actually think looks nice. Call me crazy, but I can see some Supra lines with the Soarer/SC430. It's a nice automobile and an even more nice Super GT race car. The 350Z race cars look real fat on the sides. They are pretty quick, if you're judging off the Motul Pitwork Fairlady Z in GT4.
This series has always been a varied field of fierce competition. The three different international regions (Americas, Mediterrenean, and Asia-Pacific) are all represented in today's Super GT. Only thing to make it even more diverse is if Holden, Ford Australia, or FPV wants to offer some Australian muscle into Japan's top racing series. That would be weird if it DID happen...