A body styles

A-bodies changed for 1967. Early A-bodies were 1966-older. Barracuda was an A-body through 1969. As the Barracuda changed platforms to the E-body there was a hole in the Plymouth A-body lineup along with a place to put the 340, so along came the Duster. For 1970 there was no Valiant two-door hardtop (there hadn't been one since 1966). That was remedied in 1971 with the introduction of the Scamp, which carried through the end of the A-body in 1976.

Over at Dodge things were a little different. The Dart Swinger (and Swinger 340) carried over from 1969, but as there had not been a sports roof Dodge A-body prior to 1970 there wasn't one for 1970. Dodge wanted something to compete with the Duster so the Demon was born for 1971. The name changed on the Demon to Dart Sport for 1973 and carried through the end of the A-body run. With the exception of the Canadian market 1970 saw the last performance two-door hardtop Dart. Demon/Dart Sport and Duster carried the performance options (340 through 1973, 360 through 1976) exclusively for the US market starting in 1971..