Not as high as it could've been. For another fantasy fight, Ali-Frazier I in 2012; PPV record? Race tensions would not be nearly as high but Ali would likely find a way to make it so.
If promoted like every other Pac or Mayweather fight then I would surmise a number around 2.5m. If however the promotion is expanded (as I anticipate it would be) 3m+ wouldn't be beyond the realm of possibility.
With a great name like yours how can you be so wrong. ARUM is the problem, and the main reason why the fight hasnt happened yet. Pac should have left his ass a long time ago