Another Movie Musclecar screw up!!

Saw a movie on Cable the other night called "The Butcher" starring Eric Roberts. He was playing an ex-boxer turned mob enforcer. The movie was made in 2006. He was driving a 1971 Dodge Charger. However, all through the movie people kept offering to buy it from him, and calling it a 69!!!  Worse yet, they said several times it was a four-speed, but showed a column-mounted automatic shifter. He even put it in park in one scene! Plus, his character said he bought the car brand-new. Roberts' 40ish character was supposed to be 22 when he won a boxing title in 1979.  If the car is supposed to be a 69, how did a 12-year old buy a new car?  For god's sake, why can't they do math, or buy the proper cars?  Mastermind