Is Lordstown the plant that was having a strike? I'm guessing when all birds (and engines) were transferred to Norwood there might been mixed up numbers. This might have happened DURING the move period and later smoothed out. My engine "L" is 768 numbers off (earlier) from its body "N". But interestingly, the TH350 is number matching the body. I assume it's just a replaced engine. But at least it's the correct 350 and earlier date stamp than the body. The date stamp is Oct 9, 1968 but has a big casting date next to it that says "69".

Correction: The plant that went on strike was Van Nuys.