Does anyone know the exact dimensions and measurements of the F430 steeringwheel?

Would like to find out which steeringwheel would match as best to use as a base for a replica steeringwheel..

I have noticed that kit steeringwheels are the parts that dont look as the original mostly.. want to see if I can contrubute in making a thread on a f430 steeringwheel..

thanks in advance for the input