Gen II Technology for the smallest cars and trucks. State of the art Gen II servo motor control technolory is now incorporated into the smallest heat and cool system. All new CAD designed case allows for more capacity and air flow than the original Compac system. This is the ideal system for trucks and Hot rods. Evaporator kits comes complete with 4 lever controls and wiring, louvers, air conditioning dusct hose, drain kit and heater control valve.