What are the differences between 65-66 and 67-73 Factory A/C

convx4 said
I found this post on this forum, and it has a picture showing the A/C lines low on the fire wall. Also states its a factory ac car.
http://www.forabodiesonly.com/mopar/showthread.php?t=246217

It appears this picture is showing a dealer installed set-up using factory parts. I'd bet if an interior picture were available, it would show a knee knocker style AC. That's why the lines are down low.

convx said
Also found another picture of an early a-body on the web that shows the A/C lines up by the hood torsion bars. Gold barracuda

What is correct for a 66?

That is correct for a 65/66 A Body.

convx said
I never did find any pictures of a valiant or barracuda that show the dash clearly, so I assumed it was like my 65 doge cornets A/C with 4 buttons.

A five push button control switch is at least still obtainable.
The red interior picture is taken from the web some where.
Last picture is of a 71 dart fire wall taken from the web some where.

Give me a few minutes and I'll snap a couple of pics of an early A AC firewall and a 65 Dart and a 65 Valiant heater/AC bezel