Nice pics and I love the detail. And thats a cool looking car.
That bezel around the ignition switch looks like a '67. In '69 they used a plastic bezel that was square around the key switch.
Some info, the 741 rear has a shimmed pinion (that is how the factory did it). What that means is you can swap the yoke with upsetting the pinion pre-load. Also looks like you have a cone sure grip unit.
The shifter handle is a pre '69. The '69s had a wood grain shift handle.
Year One sells outstanding reproduction wire harnesses. Not cheap but they are perfect reproductions of the original harnesses.
Looks like you are doing some excellent work love the write up.