Complex sentence: The design was based on the Ford FMX transmission of the 1960s and 1970s, the AOD replaced the majority of Ford's older transmissions, including the Cruise-O-Matic and C5.
Split into simpler sentences: The design was based on the Ford FMX transmission of the 1960s and 1970s. The AOD replaced the majority of Ford's older transmissions, including the Cruise-O-Matic and C5.