Tilt steering column question

[ric]

Most of my experience is with 1980 and older trucks. I acquired an original 1981 K10 project in a million pieces. I am nearly done putting this back together. Assembling the cab some of the trim looks like the older trucks, but some looks like the newer trucks. For example, the dash pad and the instrument cluster is the newer style. But, the bezel looks like the older trucks with the w/s wiper switch on the dash panel. The high beam switch is on the floor like the older trucks.

The tilt column in this truck looks like the older trucks too. Its been my experience that tilt column's were the same from 1973 through 1980. Did this style extend to 1983? Seems they changed in 1984 and were the same from 1984 to 1987. Is this correct?

Thanks.