Great looking wheel, Brady!
I bet this adaptor would work. Your wheel appears to have the same dish as mine.
http://www.international-auto.com/steer ... apters.cfm
It is sold to fit the IAP wheel that Santa brought.
Two cautions for anybody using this adaptor - First, use a sanding block and 400+ paper on the big end. Overspray and rough casting will tear up the Fiat horn nibs. A little dielectric grease here, too. Second, use sandpaper or a Dremel drum on the inside of the small end, so that the IAP horn button can make earth contact. BTW, the horn button is made from a grille emblem from an early car. 2-3mm too wide, so that's another job for the Dremel.
Yes, I know the dash wood is now the wrong color! I'm working on it ...
(it's a long Winter) 