I searched the web a few yrs ago and wanted this big button like a factor control panel would have or a main switch like on the back of a car but next to the driver within reach with a short lever on it.Here is the button that will do 40 amps and maybe just have ign,fuel on it

LPCB6144.jpg
GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/