The fire extinguisher is an undercover NOS bottle, the left red button is missiles, and the right button is NOS.
But really, it's just an extinguisher and the horn buttons. The fire system is pretty cool, I pull a lever in the driver footwell (out of the way so you don't accidentally pull), and it sprays the cockpit and engine bay.
Got the car cleaned today, the blue shines so much more now:
