Yeah, the regular Falcon 9 is so much stronger nowadays, it can basically do what was planned for Heavy back in ~2015. Just at the thrust difference between Mer

Yeah, the regular Falcon 9 is so much stronger nowadays, it can basically do what was planned for Heavy back in ~2015. Just at the thrust difference between Merlin engine iterations (https://en.wikipedia.org/wiki/Merlin_(rocket_engine_family) https://en.wikipedia.org/wiki/Merlin_(rocket_engine_family) ), and add the fact that the stage is longer than before, and you have a pretty capable base rocket.