Based on the default GT40 steering wheel, all credits to the original author!
I've increased the resolution and made the entire steering wheel a little brighter, so that it fits harmoniously into the cockpit.
The other changes are the shape of the spokes and the steering hub.
The difficulty about the Mirage is to get historically trusted photos, so again a big thank you to M Needforspeed!
Also a big thank you to the GPL community for keeping GPL alive!!!
EDIT: go HERE for an updated version