‘Accordingly, long before its hiphop connections, the 1964 Impala’s elegant look rather disguised the incredible power it packed in its extreme SS (SuperSport) configuration. The SuperSport treatment was an optional appearance package for all body styles, added mid-year 1964. It brought power brakes and steering, special sintered metallic brake linings, heavy-duty springs and shocks, beefed-up chassis components, and a 7,000-rpm tachometer.