Has an AFL game ever ended 158-98?
Exactly once. On June 21, 1969, Carlton beat Fitzroy 158-98, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 158-98 in league history.
That makes 158-98 the 3883rd most common final score out of 6,649 that have ever occurred in AFL. One point away, 159-98 has happened never and 158-99 has happened never.