I don't like the idea of the
oil pressure switch cutting off the fuel pump. In some hard turns on an autocross course or racetrack, you might get a big surpise. Usually though, by the time the fuel drops low enough in the carburetor to stop the engine, a lot of damage could be done. I like the idea of a very bright red light hitting you in the eyes when this happens. It's much more immediate.
RallySnake