If your car is a Lynch Road Assembly (LRA) plant car then from what I've seen it's closer to one to two weeks not months. A lot of LRA cars seem to be more like a few days prior to the SPD from previous threads here. Still would like to keep that thread active. Brings up a question for me as to where (and when) the K-frames were made/assembled in the plants. Were they part of Body-In-White or that general area of the plants?
IMO two months prior to SPD is a stretch but not totally out of the question but not likely from what has been posted.................for LRA cars that is.
Mike
Even though the OP doesn't have a LRA car, I do...and that comment helps me. So thanks.