I made it to Cordova this past Friday night with my car. It's a 2000 Z28 A4, completely stock other than an SLP lid and K&N (still has the stock exhaust!). It has 122k on the clock and runs pretty decent. The 2.73 gears killed me off the line, but I got about 23mpg average including the track time! My best was a 13.91 at 102.3 mph. We'll see how it does next summer with an LS6 cam, LT's, 3200 stall, tune, and 3.42's.