Also the hub on a 727 converter is larger than the hub on a 904.
If the numbers are correct, the converter is a factory low stall (around 2000 stall) for a 1968-up non lockup 904 with either a 225 or 318 engine. The factory doesn't paint converters. Definitely a rebuild by somebody. Any converter builder worth their salt, knows that a 762 is a low stall 11" converter.