Whats so special? It is just some welded drag approved cage with tubular susp., some ls6, some custom fiberglass body, and BBS mags. (a kit car). They could have at least thrown some twin turbos on there.
What i would build.
done up 10 cylinder out of a viper with some nice turbos. ( Would be close to 1300hp and 800lbs, at least)
or Chevy 472 block with custom fuel injection and two turbos . If wanted it could reach 2000hp easily, but the rest of the car would not hold up including the t56 tranny.
probably the most expensive part would the body with that special composit. $189000 is way too much for it