This argument is semantic. Yes, on the '65-'72 A-body factory A/C, the portion of the underdash housing that holds the A/C evaporator can be separated from the portion that holds the heater core, but they are two parts of a single whole, not two independent housings. Neither one will function correctly without the two parts attached to one another.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

None of this stuff is factory equipment. It's all from an aftermarket add-on air conditioner. You're still missing the condenser, the filter-dryer, the expansion valve, the compressor mounting brackets.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I'd buy a book on how air conditioning works. This will give you an idea of the up hill battle you have ahead of you.
Or you could go this route.
http://www.renaissanceracing.com/images/RNAC.jpg

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

ja...ja.... very funny, I will look for a book after seeing in A/C installation shops.

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Mopar Muscle is well defend by Slant Six!

Valiant Duster 1971