Leigh,
I would encourage you to do a search on the wheel subject, since there are several threads that have covered alternatives and issues to consider... Pretty much, if you install a wood steering wheel you will give-up the airbag. There is one wheel that has been shown in the 164 forum (the Spider and steering wheels with airbags are the same) which I believe is from a later model year Alfa, which looks just like your stock wheel, with the airbag, but has wood around the wheel. It was very expensive however ($700 or more I think), but it is available in Europe.
Best regards,