heater hose routing

I'm trying to get a new radiator for the Dart and it seems that it may be an oddball? I understand that on most of these the heater hoses come from the block and return to the water pump. Mine appear to go from around the pump and return to the radiator on the passenger side of the upper tank(see 2nd pic) Any idea's on what to replace this with? Gary is working on it too but I'm a GM convert with my first Mopar and it seems that at some times, sister cars from Mopar were even put together differently!