This is what I can tell you. My charger was built in March of 70. The correct hose according to the parts book for a car built AFTER 1-1-1970 is 3441 520. That is the number on the hose in my picture. I had two more and one was the same number and I don't remember looking at the other but they all three looked the same. I can't say that I have seen part number 344 1283 which is a hose for UP TO 1-1-1970. There is only one condenser listed for 1970, # 3441 423. There is only one hose listed for 1969, part #2936 768. I have several of those as well. The condenser number for 69 is 2936 780. The picture in the 69 parts books show a hose just like the one pictured on the red 70 Charger with the long tube that goes right in front of the core support. I have never seen a 70 with any hose but the one like my picture. I would like to know the part number on your hose if you can find it. It is on the crimped part by the rubber hose.