Try searching for 'Softie Parachutes'. I Believe they deal with that sort of thing.
If you google for a cutaway picture of a Mustang, it will show you that the control cable runs make their way from the top of the rear fuselage to the bottom as they run forward, in exactly the area that is missing from the P-51 in the picture above. I'm sure he bailed because the elevator was not responding.