Chrysler Repair: removal of evaporator 2002 T&C, refrigerant system, core tubes

Question
The evaporator is leaking in our 2002 T&C (Ltd).  I've gotten the dash removed and have been trying to remove the hvac mixer box (the whole assembly or parts) but with no idea how it comes out or off the firewall.  Can you help?
thank you, Frank

Answer
Recover the refrigerant from the refrigerant system. (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - FRONT/REFRIGERANT - STANDARD PROCEDURE - REFRIGERANT RECOVERY).
Drain the engine cooling system. (Refer to 7 - COOLING - STANDARD PROCEDURE - COOLING SYSTEM DRAIN).
Disconnect and isolate the battery negative cable.
Disconnect the liquid line and suction line from the expansion valve. (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - FRONT/LIQUID LINE - REMOVAL) and (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - FRONT/SUCTION LINE - REMOVAL).
Remove the windshield wiper module from the vehicle(Refer to 8 - ELECTRICAL/WIPERS/WASHERS/WIPER MODULE - REMOVAL).
Disconnect the heater hoses from the heater core tubes. (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - FRONT/HEATER HOSE - REMOVAL).
Remove the four nuts that secure the heater-A/C unit housing studs to the engine compartment side of the dash panel (Heater-A/C Unit Housing Studs).
Remove the instrument panel from the passenger compartment. (Refer to 23 - BODY/INSTRUMENT PANEL/INSTRUMENT PANEL ASSEMBLY - REMOVAL).
Remove the floor distribution duct from the heater-A/C unit housing. (Refer to 24 - HEATING & AIR CONDITIONING/DISTRIBUTION - FRONT/FLOOR DISTRIBUTION DUCTS - REMOVAL).
Remove the one screw that secures the heater-A/C unit housing bracket to the passenger compartment side of the dash panel (Heater-A/C Unit Housing).
Pull the heater-A/C unit housing rearward far enough for the mounting studs to clear the dash panel and remove the unit from the passenger compartment