However, the Super Sport package could still be ordered with any engine in the lineup, so if you come across a six-cylinder Impala with the SS tags, the chances are that it's a real thing.

The SS 409 was such a stunner that the Beach Boys ... The reason is simple: a '61--'64 Impala is lean, clean, and mean, giving it the baddest possible profile, sitting a half-inch off the blacktop.