I obtained the dealer order book for the 87 Mustang model year (Canada) and noticed something strange in one of the photos. There's a square recess molded into the dash that I've never seen before. My car is an early 87 (ordered 8/86) Canadian export and does not have this detail. I'm wondering if this was a prototype dash with the location for a Day/Date/Elapsed time clock which was deleted for 87 and the photo some how made it to print to the dealers. At the manufacturing level it would be a simple matter of removing a square plate in the mold to produce the production dash. FYI, the car in the photo was a white convertible GT.