1972 Duster. Are firewalls different for heater/defroster models versus A/C ?
I know that there are more holes in the A/C firewall but otherwise, they look the same to me.
My two 1970 Chargers were original A/C models and they were noticeably different than non A/C models.
A/C has the blower motor visible in the engine bay and several holes in the firewall:
I cut that out and patched in a section from a NON A/c firewall.
Now the heater motor is hidden and there are only 2 holes for the heater hoses and to mount the heater/defroster unit.
These A bodies look like they tried to use one stamping and just punch a few more holes for A/C.
1967 Dart non A/C:
I know that there are more holes in the A/C firewall but otherwise, they look the same to me.
My two 1970 Chargers were original A/C models and they were noticeably different than non A/C models.
A/C has the blower motor visible in the engine bay and several holes in the firewall:
I cut that out and patched in a section from a NON A/c firewall.
Now the heater motor is hidden and there are only 2 holes for the heater hoses and to mount the heater/defroster unit.
These A bodies look like they tried to use one stamping and just punch a few more holes for A/C.
1967 Dart non A/C: