No-one is ever going to replace 411A!
The engines on the -200, -250, -500 were all the same i.e. the RB211-524B; which produced 50,000 lb of thrust.
The TriStar max payload range wasn't particularly startling, but the British Airways -500 did fly the London to Rio schedule.
I would hazard a guess that at a very light ZFW that the range is quite good. However, without passengers/cargo... what would be the point? Except as a VIP personal jet.
TCF