Here's a quick, 4min video from one of the Ft. Wayne tuner shops showing a few of their cars doing 1/4 mile runs on the dyno and a few pretty tight burnouts, including one from the chief mechanic's personal ProCharged Z28... 126k on the clock, 550rwhp on the stock bottom end.
Also check out
This vid of a 790whp/750tq TT Z06 (watch the speedo FLY on the in-car track run

) and
This page with a customer's ProCharged, LS1-powered RX7 that makes 563whp