Heater core r&r 66 barracuda with ac

I’ve got a 65 FSM which was apparently printed before the factory AC was available. Mopar dis release an AC supplement for 65 which I also have. Here are the pages describing removing the heater box to get at the heater core. On the first page the area I circled is glued to both heater and AC boxes and will probably be destroyed when the 2 suits are separated!

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