1970 Roadrunner heater delete

Hemi2Much said:

There should be insulation on the inside where the heater box would be. There should be two holes for the heater core pipes to stick through the firewall.
If it was a true heater delete car there would be plugs in the insulation that were never removed. These plugs are the same material as the insulation just never completely removed. Some pictures would probably be helpful.
Here is a picture of the firewall insulation, notice the plugs have been cut out but not removed. If you zoom in on the picture you might be able to see it. The factory would not have removed the plugs if a heater box was not installed.

Here's n old pic but it shows the firewall n when I did the carpet the old insulation was gone

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