RA1 steering hub

Anyone know what spline is on these bad boys for steering wheel hub?
aka what works?
Accord?
Prelude?
Civic?
or do you use a toyota?Nissan?Mazda?

I have a nardi i need to get a hub for. 
help please
thanks matt

i know the mugen hub for prelude/accord works....but i used a momo hub from a 87 toyota supra....

thanks man.. 
good to know