I'm replacing the heater core in my 64 Dart GT convertible. As I'm disassembling the unit, I've noticed that the plastic seems to be trying to come apart in my hands.
Since I know no one makes a new heater box to fit my car, how long were these heater boxes used in the Darts & Valiants? As late as 70? 73? Watching Dylan McCool's heater core replacement video on Youtube, it looks like the one in his Dart is identical to the one in mine.
