Early A Convertible rocker
Like Don said the convertibles have a thick beam inside the rocker like in the pics below.
This link is a story about a B body convertible restore, but it shows some good cut-away views of the convertible beam: Gallery: The AMD Installation Center & Classic Muscle Metal Resurrect the “Comeback Cuda” - Mopar Connection Magazine | A comprehensive daily resource for Mopar enthusiast news, features and the latest Mopar tech
Like Don said the convertibles have a thick beam inside the rocker like in the pics below.
This link is a story about a B body convertible restore, but it shows some good cut-away views of the convertible beam: Gallery: The AMD Installation Center & Classic Muscle Metal Resurrect the “Comeback Cuda” - Mopar Connection Magazine | A comprehensive daily resource for Mopar enthusiast news, features and the latest Mopar tech