I noticed this steering wheel on a petrolicious video featuring a Datsun 240z and was wondering if someone could help me with identify if the steering wheel was a Nardi Competition or a Nardi Deep Corn or something else? Also, with these steering wheels, what kind of hub/adapter do you need for it to work on the Datsun 240z/280z?

 

Looks like a Nardi Personal with an inexpensive after market  lace on leather cover(the spokes are not tended to).  It will take a 240Z specific hub adapter, to go on the column, and the wheel will bolt to that..  Should still be available from Nardi/dealer, but you might luck out on ebay...

 

 

No "lace-on cover" there.

Looks like it (whatever it is) takes a pretty common 6-bolt adapter.