Ac evaporator ends 1973 dart swinger

Hey all
I have a 73 dart swinger that came with factory ac. Later evaporator with the ends side by side. The end on the right side of the evaporator got broken off during removal when I was younger and dumber and didn’t realize it wasn’t a readily available part. I have a guy who said he can solder a new end on it but he would need the end. Does anyone know of somewhere that sells just the ends? I’m thinking maybe just have him switch both ends since the threads don’t look great on the other one either. My other option would be to just order the aftermarket one from eBay as it’s the only one I found, but not sure how great the quality and fit would be compared to factory.
Thanks
Mike.