1966 Barracuda A/C question

I'm trying to locate a factory A/C type [replacement] evaporator and I can't seem to find anyone who makes/sells them. I'm sure that in 66 they used the same evaporator in several different models [both Dodge and Plymouth possibly Chrysler too] I just can't seem to figure this out I have been looking off and on for several years with no luck. Any suggestions?

Thanks