Well, YoungWarrior. You haven't got the facts right. The engine didn't blow up. What happened was that they where experimenting with a 350 shot of Nitrous and due to a malfunction on the dyno they blew a few pistons. No biggie and not due to bad build quality. Nothing like the blown engines on BMW M3's (E46)
There is a looooong thread about this on corvetteforum.com
Nah that car didn't blow up, just idiot with lots of money messing around...in all honesty I personally think that the Z06 LS7 engine is bulletproof...it is built right. It's freakin huge but it's built very well.