aluminum radiator install

This is my first post so i hope you all can help. From what i have been reading there is alot of knowledge on this site.I just bought an aluminum radiator for my 67 GTX. It has the 727 transmission. The radiator does not have the fittings in it to connect the transmission lines to . I stopped at a few auto parts places and not one had a clue to the size that i needed. I was thinking about adding a trans cooler later but i just want to hook it up like the factory did for now. Doe anybody know the correct fitting to look for? I think it has to be an inverted flare. Thanks in advance. GTX
Author: GTXthunder