Just to provide some more examples of how variations can and do occur, here is the original upper radiator hose from my 71 340 Cuda convertible, and a period NOS replacement hose (with paper tag still attached). Both hoses are striped. It is interesting that the hose part number (3462102) and the hose vendor number (42332) have their positions reversed.
The heater hoses 860457 and 2936392 (0361 and 0391 dates for a 3/31/71 build date)are also original to the car. You can even see a splash of original engine paint on one of them.
I have seen many examples of striped HEATER hoses on original 70 cars, but fewer on 71 cars. The ink seems to be more of a silvery color on 70 cars, and more of the off-white color on 71 cars. There are at least 4 different vendor numbers for heater hoses, and at least 3 different vendor numbers for radiator hoses.
