I had a new fire extinguisher, but was unaware that the fire was being fed (from the electric pump which I had neglected to turn off,) an ongoing supply of fresh gasoline from the fuel line I had FORGOTTEN to re-attach to the float bowl... so, with all that new gas being added to the fire (I couldn't see it for the flames and was brain dead to the fact that the pump was still running,) the biggest fire extinguisher in the world wouldn't have put that fire out.
But, the intensity of the fire and the fact that it was burning as fast as it was being pumped onto the engine, kept it from spreading I think, in retrospect. The damage was pretty localized... just extensive in its nature. It burned for at least ten minutes before this idiot realized that the pump was still on... and went to the trunk and shut it off.