We have narrowed down the steering wheels we are going to use and have some extra units. These are from light aircraft like Cessna and others. These are all cast and are hollow throughout which can be used to run your electronics inside the wheel and also have provisions for switches on top. The price is $100 per wheel plus shipping. I have two of the first one and one each of the other two. Tony
This one is 10" across.
This one is 11" across.
This one is 12 1/2" across.