All I can say is "WOW"!!! Your car is incredible. I have an 86 560 also and I never thought it could look like yours does. How long have you been working on it. I just went thru the pictures. It was interesting to see how the car went thru the different progressions. Do you do a lot of the work yourself?
I bought the steering wheel from a small firm in Germany through Ebay Germany.
I am in the process of completely redoing the interior, and I've purchased a smaller Nardi wheel that I hope to use. Depends on what I come up with for the column. If it all goes as planned, I'm going to sell my wheel. Let me know if you're interested.