Should be close if not the same for the Camaro's
I know 67's had a smaller shaft and a specific collar that it fit into as it goes into the door and this is a clear plastic, and the knobs themselves were color coordinated with the interior (blue with Blue interior, red with red etc...)

In 68 the shafts were larger, and had a chrome collar etc, and I think they dropped the color coordination. And 69 should be similar.

Brett - 67 Drop Top 455!