(Right) Here's a pic of the temporarily replaced lugnut from the last track event. Man was that a huge PITA to try and locate a replacement. It's got a new ARP extended stud back in there now.
And I'll be packing extra's from now on!
(Below) I also mounted a fire extinguisher in the car this June. It was a requirement for the Redline event, but I plan to keep it in there for extra safety. It's a 2.5lb bottle mounted at the front of the passenger seat.
(Below Right) Instead of using AMB transponders to track times, Redline uses RFID tags like this one: