Black belts it is.
I'd forgotten what fun is is to make belts and I have also never used ribbon for them, so it is taking a bit longer then I hoped.
Here's the interior without the belts (and dash).

door pulls, E-brake and shifter are CF. The floor and rear deck are flocked and PE speaker grills have been installed.
I need to scratch up a belt bar (a bit much for a street car) and finish and install the fire extingisher. The dash still needs a bit of work too.