Since I'm needing to replace the heater core, I want to replace the evaporator also. I have a 2000 Explorer 302 in it now using the Explorer accessories. I'll be using 94/95 Mustang AC hoses, but don't know the rules of mixing and matching parts to complete it. Do I just use all 94/95 Mustang components? Does the 94/95 evaporator fit in the '79 plenum? All I've removed so far of the stock '79 system is the hoses and expansion valve. Any help would be appreciated.