Fly-By-Wire Fully Electronic Servo Motor Controls With No Cables Or Tube To Route Infinite ?Just Right Temperature? Air Blending Infinite Blower Fan Speed Adjustment High Volume Dehumidified Defrost Mode Separate High Capacity Aluminum Plate & Fin Cooling Coil Copper/Brass CuproBrazeTM Parallel Flow Heater Coil Mounts Behind The Dash Uses Your Factory 2-Lever Control With Stylish Underdash 3-Knob Control Panel The Gen IV? is Vintage Air's most powerful and intelligent climate control system. Gen IV systems utilize the exclusive fully electronic microprocessor control servomotor drives to eliminate 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. Our new 1959-60 El Camino SureFit ? system a 3-Knob underdash control pod for electronic operation of the original 2-lever control panel. Additional features include variable blower speed and dash/floor/defrost blend. SureFit ? Systems are engineered specifically for each vehicle application and require minimal alteration to the vehicle for installation.