Complex sentence: When the film was released in theatres and scenes were added, a 1972 model with a 225 Slant Six was added, with the "Plymouth" name on the hood as one emblem.
Split into simpler sentences: When the film was released in theatres and scenes were added, a 1972 model with a 225 Slant Six was added. This model featured the "Plymouth" name on the hood as one emblem.