Bucket seat tracks are date coded as well, look on the inboard track in the area circled in yellow.

Here is a close up showing the date code of 70 209

and another view showing the date code of 70 210

For these, 70 is the year (1970) while 209 and 210 are the 209th and the 210th days of the year respectively.

The seats have several different date codes, these first two are steel tags from the bucket seats, note that they are in simple month / day / year format - November 17, 1969

This next tag is cardboard from under one of the same seats, the date code is 0980 for the 98th day of 1970

These two tags are from the rear seat back and bottom and are made out of aluminum. The one on top is dated 0090 for the 9th day of 1970 and the one on the bottom is dated 0900 for the 90th day of 1970

Even the upholstery was date coded, this swatch is ink stamped 11-69 for November 1969

Here we have a distributor from a 1969 model year 440, the date code is 37 8 for the 37th week of 1968

Carter carburetor tag, from the same car, the date code is 2708 for the 270th day of 1968.

This radio label is stamped 3038 for the 303rd day of 1968.