I had a look to find the engine number on my 74 Spider 1600 Junior and found that the unique part of the number is missing. The car was 1st registered in Rome but came to New Zealand in the late 80s. It appears from the first part of the number that it's the correct engine for the car and has the later spin on oil filter which should make it dead right for the car as I understand. I can't understand why it would've been removed (the chassis number is present) unless AR supplied it as an un-numbered block for a warranty claim. Did this happen? Or is it just a case of somebody removing for reasons lost to time?