I have a 1970 Dart Swinger orig 225/6 with factory (assembled in windsor/Canada) ac and heater. I requested a replacement evap core from Bouchillon and got one that was bigger than the old one, by a lot. I attached pix hoping someone could let me know any resources for the correct one, or if the old core is from any corresponding Dodge model vehicles I could search under for a replacement? I also attached a pic of an ac system exactly like mine in my swinger, that I gleaned off this forum somewhere, I would say that evaporator would most likely be the one I need in terms of size and looks of ac/heater system being exactly like mine.

bump for helllppp...

It looks like you got an evap from a 1973-1976 a body with factory air get them to take it back and email them a picture of yours so they can send you the proper one.