I have a spare instrument cluster for your car.
Micky off here (previous owner), I believe took it out and replaced ith with it's current one after the odometer stopped working but apart from that, everything else is fine and not cracked. I will get a photo for you on Monday.
I have the same car as you and mine has on the left side Audi 100 CS and the Sport logo on the right hand side with the numbers 2.2 next to it.
The 100 CS did not carry the "sport" badge on the back.
