I recently went to a local car show and saw a 32 Ford with a sbc. The owner did not fully open the hood and was not available to answer my questions. What got my attention was the efi system. It was an aftermarket stand-alone system. I could barely see the ecm mounted on the intake and read the letters gm marine. I tried to google for gm stand alone system but came up nothing. Anyone ever heard of this sytem? Where can I get more info on it? thanks