Heater box

The heater box had to come out for some reason that I don't recall. The heater core was rusted out and needed to be replaced, but that didn't necessitate removing the whole box.



The padding on the heat door is crumbling and needs to be removed. I've never heard a suggestion for what to replace it with.



I have never had a blower fan in this car. Since this Malibu was a base model with no A/C, the heater box and blower fan is different from the units in A/C equipped models. It took me a while to find the right blower, but I found one in an El Camino SS.



The sealant that went between the firewall and the box was some heavy duty stuff. I've never heard a good suggestion on what to use when replacing it. Someone at an auto parts store suggested 3M Weatherstrip Sealant which I have and with probably try.