The favorite nitrous story I heard was the guy that had it hidden in the hood of his car. The first thing they would do during inspection after he was accused would be to remove the hood.
A scooped hood I assume? I've seen it in so many places, including inside the fuel tank. I've wired a small amount of such systems into whatever switch is available on the dashboard. Hiding the solenoids is the real issue on wet systems...Life as a street racer was fun (but stupid). :)
