Has a FIBA World Cup game ever ended 67-63?
It has. 67-63 has been a FIBA World Cup final 3 times in 2,041 games. The first was Philippines beat Uruguay on November 5, 1954; the latest was Egypt beat Morocco on November 26, 2017.
That makes 67-63 the 96th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 68-63 has happened 2 times and 67-64 has happened 2 times. At one point the score disappeared for 56 years, between 1963 and 2019.