Which heater box is correct?

My '64 Barracuda came without a heater. I bought one (not sure of the year), but it's too busted up to warrant repairing. Grabbed another from a '63 Valiant today, but the cable brackets and one door are in different locations. Can anyone tell me, from the pics, which style is correct for 1964? I'll adapt the brackets on the '63 box (the one in the back) if I need to.

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