The three speed Torqueflite was common in early Chrysler cars such as the "R" series Valiant, the "S" series Valiant, AP5 and AP6
These models were from about 1961 to 1967 not sure how long it continued use but maybe into the 70's. You may be able find out the info you are seeking on a Chrysler car forum, either America or Australia, the best bet.
I can maybe recall the Torqueflite conversions done in some Range Rovers here way back, not heard or seen in a long time.