This time I kept patient...
In the meantime I have decaled side skirts and the next step will be 2K
Going back to the interior. Bucket seat is painted with matt black. Seatbelt material provided by Tamiya is a crap - something plastic-fantastic

So I created my own Takata material - silk ribbon painted with Tamiya Park Green. It gives right shadow.
Now it is time for dashboard. I have only few pics and one game render...
This is what Tamiya gives you to simulate switches and controls:
I will use only switches descriptions and make my own with Hobby Design knobs and switches.
I have started drawing a stencil (Corel) to make perfect aligned holes:
Nest step is to print, cut and glue stencil to the panel. It should help a lot to drill holes right.
I have just run out of printer ink so you have to watch next update to see the results