Arnolt Bristol Lower Rad Hose

[Avalanche]

Our AB blew up its (possibly original) lower rad hose. Our car has a heater so the lower rad hose has a tee in it to feed the heater. I understand there were few Arnolts that came with heaters. I also understand this hose may also come on one or more of the Bristol 400 series cars. I've done considerable searching and have found no source. It would be much appreciated if someone could point us in a direction. We've temporarily bypassed the heater feed with a straight hose from the pump to the radiator but would like to find a permanent solution.

Thanks in advance for any help...

Dale