Hi again.

That's interesting. Is the door tag the only place that you see the production date? The build date of a Dearborn car with that sequential number should be like 16 or 17B. If the door tag has been replaced, that would explain it. The guy looked at B and saw H.

If you look at the tag and the axle and
trans codes are separated enough and are pretty much where you would think that they should be, the door tag has been replaced. They look like a 2 digit code underneath
trans on the original door tags.
