[69rsss350]

I believe the answer to the question the way it was phrased would be 0. Yenko transplanted all the "original" engines to 427s. The answer to the question the way I think he meant it is irrelevant, as there really isn't anyway to tell without documentation running all the way back to the first owner. Yenko didn't identify the 427s that were transplanted to the best of my knowledge. It is the original Yenko vehicle itself, with its verifiable VIN that matters, not whether it has the "original" or "original transplant" motor, at least in my mind.