"...1966 saw the Barracuda get a slight makeover which included a new die-cast grille and tail lamps. A list of optional equipment inside consisted of a transistorized AM radio, seat belt retractors, and a new center console. The performance Formula S option also returned this year. Motor Trend flogged the Formula S equipped with a 3-speed TorqueFlite and got a respectable 8.9 second 0 to 60 time along with a quarter mile run of 16.5 seconds running 84 mph. Installing a Paxton supercharger upped the ante and gave this compact a little extra kick. From 0 to 60, the Barracuda was 1.1 seconds quicker and the quarter mile time was shaved by 0.7 seconds. The supercharger also made the Barracuda 8 mph faster in the quarter mile. According to Motor Trend, this upgrade only cost $365 and took about an hour to install." 1964-1969 Plymouth Barracuda Tell me they thought this was a factory option in 1966...It's written to seem like it was just another option you could order.