I have a 1987 Rx7 TII, and sadly, a bad evaporator. What do you fellas do to replace them, its already out of the vehicle. Are there any aftermarket ones I can go to, or am I stuck with Ebay used ones. There is also a small little coil that was with the blower motor. What does this coil do, as it is also shot.

 

thats the Blower Motor Resistor. i just replaced mine as i removed and rebuilt all three of the AC/Heat boxes. it was $30 from autozone.