Toyota Motor Corporation's M family of engines were a longitudinally mounted straight-6 engine design. They were used from the 1960s through the 1990s. All M family engines were OHC designs. While the
The Toyota Crown is an automobile which has been produced by Toyota in Japan since 1955. It is primarily a line of executive cars that is marketed as an upscale offering in the Toyota lineup.
Toyota M engine
…The M family were Toyota's most prestigious engines (apart from the uncommon V family V8) for over 30 years. They were commonly found on the large Toyota Crown, Mark II, and Supra models…