Is there anywhere online or in books, or can anyone just tell me, that is the method for identifying whether the engine in a 65 A-code fastback is actually an A-code engine?
Look for a thin aluminum tag attached to the top of the carb bowl, square on 3 sides, pointed at the attachment point ( carb bowl screw) Sometimes this tag is also attached to the intake just forward of the carb. Also check the date codes on the intake to see if it was built before the build date of the car.