hub adaptor ?
 

what other cars have the same steering column spline as the fc. i need a cheap ebay special and cant find any that are tagged 4 the 7

Cheap Ebay steering wheel? There are some horror stories about those on here. Get a good quality steering wheel..

Miata's use the same spline, but remember the cheap ass steering wheel adapters won't be drilled for the steering position sensor and you can have problems with power steering, and turn signals if the wheel adapter is not installed correctly.

yea i just looking 4 the adaptor not the wheel and i dont have power steering so im not worring about it as far as the turn signal i just have to figure it out anyone now any other models that will work and which year miata