thanks for that intruder, wow thats some miles on the clock, can you please tell me was it still flying passengers all that time or was it a cargo aircraft? and any idea if it was the original engines? thanks.
AFAIK, it was a freighter all its life. That means it operated at higher average gross weights its entire life.
It is unlikely the original engines were on the airplane, because engines are routinely swapped among airplanes as they need repair or refurbishment. I suppose it is possible 1 or more randomly came back to the airplane, but it is also more likely those "original" engines are still on another airplane, with many new parts.