This is the correct answer.The frame VIN sequence is slightly shortened from the one on the door jamb.
The door jamb sequence begins "(V)(A,B, or C)(55, 56, or 57)X...... V shows it's a V8 car, nothing shows it's a 6. A, B, or C indicates 150, 210, or Belair. 55, 56, or 57 indicates the model year. X is a letter for the assembly plant.
The frame VIN is the same except it begins with the model year.