Upper Rad Hose

I have a 66 Dodge Dart 273ci with factory A/C ,I seem to be haveing a hard time locateing a upper rad hose ,anyone else haveing the same problem or a solution .i have a gates part #20416 but it dosent seem to work .Thanks
You will need the correct thermostat housing. Probably not the one that exit's straight up but at a angle.