1972 Duster. Are firewalls different for heater/defroster models versus A/C ?
Are the only differences the 2 a/c line holes to the right of the heater hoses, and the a/c fan has a larger hole?
Is the non a/c fan hole and the a/c fan hole concentric circles, aka same center point?
Are the only differences the 2 a/c line holes to the right of the heater hoses, and the a/c fan has a larger hole?
Is the non a/c fan hole and the a/c fan hole concentric circles, aka same center point?