I think I did a post on this awhile ago, but here I am again. I started off thinking all I needed to do was replace the heater core which was leaking. Little did I know when I started how much disassembly was required to get to it. Once in, the box was rusted and full of mouse nest stink so I decided to replace the whole thing including the duct hoses. For the life of me I cannot get the heater box up high enough to have the blower motor fit thru the firewall opening. the Ford manual has it going back in one piece. I am tempted to take the clips off so the box is in two pieces, fit it up and just get what clips I can reach to refit the other half back on and be done with it. Maybe reach some tape onto where I cannot refit the clips. I have removed pretty much anything that was in the way including the glove box, side kick panel, under dash instrument pod, radio and radio bezel, and the front seats. I mention this because I have allowed as much room as possible to get the job done. Any suggestions appreciated.