Any inertia switch should work. They are in all cars with electric fuel pumps to my knowledge. It is a simple switch to interrupt power to the fuel pump in a crash. My mother's 1985 Mercury had one in the trunk. They work. Clark Clark W. Nicholls 1972 Stag 1974 Spitfire (and 2 rusty GT6's needing restoration) "Reality, it's not what you think."