a cD of .357 is actually pretty damn high. Only slightly lower than that of the Veyron's (.36 with wing down and in lowered position - .41 with wing in "attack" mode).
Compared to the Koenigsegg CCR which has a cD of .297, and the new CCX, which supposedly has a drag of .277.
I'm pretty sure that SSC is using the DART billet block, as seen in this guy's build:
http://forums.corvetteforum.com/showthread.php?t=1948784
Me personally, i think the front is fucking hideous. Lord it's ugly. The front windows are straight from a diablo, but the back half is nice. Its just.... piss poor american styling as usual. That being said.........
I'm working on getting a private photoshoot setup there for next spring
It might be ugly, but its still damn cool and impressive!