Also, to the best of my knowledge, GE CF6-80C2B5F (which is rated at a more powerful 61,500 lbs. thrust) has only been used by 2 airlines on B744: Saudi Arabian Airlines & Virgin Atlantic but PW 4062 (which is rated at the most powerful at 62,000 lbs. thrust) has never been used by any airline for B744 so far.
Can you please correct me if I'm wrong with the facts shown above? Otherwise I may assume that my information is accurate. Thank you very much!