Aftermarket A/C , there is units out there like Vintage Air and they are not cheep and not in my budget, We all agree that most all parts come from China anyway so with that said Amazon sells units for half the price . I want to hear from people that put a unit in their 1940 Chevy coupe, what they used. I live in Canada and between our **** dollar, our taxes , our duties, tariffs and shipping in makes buying in the USA not affordable ,My last build i got everything from our friends down south , those days are gone now... Vintage air for me out of the question. But Amazon units are affordable here. I will be doing all the work.