Just a "D"
 

Why does my '67 LeMans' data plate have nothing but a "D" on it for the options? The car has a lot of options: cruise control, AC, tilt steering, safe-t-track, AM-FM, power windows, plus a few others. Was it some kind of pattern car that they just ran through with a bunch of options? It's a Baltimore car, built middle of April 1967.

Options

The five group thing wasn't used at all plants. It's also a Fisher Body
thing, an AM/FM is a straightforward install, while a power antenna
needs a specific stamped(?) hole in the quarter panel. Basically, any
modifications that fall outside of the model's usual fare.

Baltimore Assembly did not show the group option codes.
If your '67 LeMans was a Kansas City plant, or a Pontiac plant build, all tinted glass, pwr windows, AC, & AT would be noted early in the group option string. Remote mirror would also be noted.