Thanks for the advice. Now I'm past the dash and am trying to get into the housing that contains the blower, heater coil, evap coil, etc. cannot get it from the firewall to disassemble. Is there anything beside the bolts at the top and the coolant/ reefer lines that are holding it in? What kind of special tool does it take to remove the coolant lines, they seem pressed on with a black ring that connects the coil to the lines?
I have a seemingly worthless haynes manual. Is there something better and where do I get it?

Thanks again!