http://www.autoblog.com/2007/12/19/detroit-2008-the-king-is-back-atop-the-hill-2009-corvette-zr1/
Interested to hear Pelican's comments
Supercharged 620-650hp V8, dry-sump lube, hand-built, lots of titanium bits
15.5 F / 15.0 R carbon ceramic rotors with six piston Brembos (same as Ferrari FXX)
Carbon fiber fenders, hood, roof, splitters/skirts/diffuser
335/25-20 Michelin Pilot Sports in the rear
Should weigh in around 3200 lbs
~$100,000 price tag
Details on the engine:
http://www.autoblog.com/2007/12/19/detroit-2008-the-heart-of-the-king-the-ls9-is-born/