How to remove Heater Box in 68' Dart WITH factory Air

It has to be removed as 2 assemblies. To remove the heater box, remove the hoses and seal plate from engine compartment, then remove the vertical rod in the intake duct, then remove the bolt on the upper left side of the heater box that's holding the 2 halves together. I think there is an actuator that has to be removed as well. If you just need the heater box out I think you can get away with leaving the a/c box installed and stop here.
If your car has the under dash vent assembly, remove it by removing the 2 nuts holding it to the underside of the dash frame with a deep socket, then it should slide out.
As far as the engine compartment, remove the 4 or 5 nuts, the 2 screws on the a/c line cover, and all the hoses. Leave the fan installed, it can come out with the box. I'm sure I'm missing something, but nothing that you couldn't easily figure out.