Vintage Air's Gen-IV systems for 1961 to '64 Chevy Impalas are some of the most poweerful and intelligent climate control systems on the market. For starters, their exclusive Gen IV systems feature an exclusive fully electronic microprocessor control system that requires no cables or vacuum connections. Separate high-capacity copper parallel-flow heat coil and aluminum plate and fin cooling coils provide outstanding performance and instant temperature adjustments. These new Impala Sure Fit systems include Vintage Air’s exclusive Cable Converters to adapt your factory dash controls to fully electronic functions. Each Sure Fit System is engineered specifically for each vehicle year and model application and require minimal alteration to the vehicle for installation.