I'm stumped!

Here's a picture of my 66 with factory air, although the components are long gone.

On the far left is the heater control valve. As far as I know non a/c cars do not have this valve.

Moving right you see the blower motor, then the heater core lines, and all the way on the far right with caps on them are the original A/C lines through the firewall.

Hope this helps.

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