Mine is super close, a 12D car with a 12-68 shifter. I don't think there is a week given on the shifter code so can't narrow it down further, but my car and shifter are both in the same month of the year so they can't be more than a couple weeks apart.
However, a shifter, or most any other date code spread 2-3 months apart wouldn't worry me much, as long as it's obviously before the car build date.
