1966 Dart Champion radiator and aftermarket water pump need recommendations on lower hose.

I am trying to replace the lower hose on my 66 GT with a 318 engine. I have a champion three core radiator and an aftermarket water pump outlet on passenger side. Both outlets are 1.75 inches. Can anyone recommend some part numbers for a hose that may work? The hose I have has no markings.

Thanks for any advice,
Keith