You know you are probably correct, as I see phoenix car graphics sells the dust swirl stripes for 71/72 twisters. I know the dust swirls were not correct for 71 340 cars, but are correct for 72 340 dusters. I did notice that the orange 71 twister that is being parted out by a member on here does not seem to have any swirls though, unless they are faded off like yours were???