I have had some concern with my car since a recent conversation with a well known fuel pump guy. The car is question is your typical street/strip, SBC with a BigShot plate, alternator, MSD 6al, big fuel pump, electric fan, all street related equipment, average size battery. In conversation I was told not to even try to fire the nitrous due to insufficient battery and that the fuel solenoid would NEVER open. He stated to run 2 deep cycle marine batteries with the caps on the top and that the gel cell batteries (Optima) were junk as well. Does anyone even run 2 deep cycle marine batteries any more? What would be considered the minimum in this situation?