1967 Dart Heater Box/Firewall Confirmation

I am searching for a new heater box for my 1967 Dart and I want to make sure I get the correct one ( AC or non AC). My car came with AC but I believe it was aftermarket (Sears).

Can anyone confirm I have a non-AC car by these pictures of the firewall (I believe the two holes below the blower motor hole were put in to install the aftermarket AC)?