AZjon,
Do you go to UCSC by any chance? Reason I ask is because I know someone with that screen name and goes to UCSC. And my answer to your question. Not a whole lot. Mostly protective gear for road rally and rallyx and wheels and tires. Still upgrading the driver...
02RS
17mm rsb - 40
rear diff protector - 40
front skid plate - 150
mud flaps - 120
video recording system - 250
shift knob - 50
pedal set for heel-toe - 80
wheels/tires - 1800