1966 Barracuda A/C question

65 Dartman said
Because your 66 is an early A, I suspect the interchange may be 65/66. 67 and up might work if the firewall ports for the evaporator are in the same location or very close and if it will fit the underdash box. It has taken me quite awhile to source complete AC set-up for my 3 A Bodies - good luck with your search.

I have a 67 and up evaporator that I was going to use on my 66(non stock option) to convert it to factory air. unfortunately the lines come out slightly different than the factory hole locations I got from a user on here. (by about 1/2 inch to the passengers side). they do come out from the evaporator in the same place but rise up 1/2 inch and then bend towards the passengers side too far. I ended up taking the twisted section part of my 66 evaporator and cutting the 67 evap pipe so that I could expand the copper and silver solder it to the 66 unit. I had it tested at an A/C shop to verify it was good.
now on the wife's car I'll use the 67 up A/c side and graft the 66's A/C heater box to it. it looks to bolt right on except for a wider distance from the blower motor to heater box foam. the 66 has a switch in it and the 67 does not (I don't remember what it was for but can look up in the FSM if needed)
this is the 66 bends. the 67's go further over to the passenger side.
View attachment !!!!ac difference.jpg

this is the switch I'm talking about. I could hook a micro switch up to the 67 box if I have to to simulate the switch but for now I'll rebuild this one and rewire it the factory way
View attachment DSCF3517.JPG