I absolutely agree with this. I'm sure there was much variation in the process.
I’m not aware of any paint that will match the original finish straight out of the can although something may exist.
There are two challenges here. The texture and the color. I approached them separately. First I wanted to get the texture right and then spray the color over that.
Here is the process I used for my speedo housing in the picture. The end result is close to what was originally there. Keep in mind this was an experiment.
I used the Rust-oleum texture paint for the base texture coat. Out of the can, the texture was too aggressive, similar to beach sand, and the color was wrong. After that dried, I sprayed a couple coats of primer to fill in and soften the texture a bit. I lightly wet-sanded the texture to knock it down until I was happy with it. I then sprayed a couple coats of satin Black for the top coat to get the right color.
The dash lower will be more of a challenge. The texture is bigger in scale. When I get to that point, I will probably use the same method but with extra layers of primer to help enlarge the scale of the grain followed by wet sanding to flatten it out.