IF I were to change the wheel on my car, ...I'd consider the mid 70's (actually up to 81 I think) Sport steering wheel used on many of the Camaros.
It's a '4-spoke' wheel, a little smaller in diameter than the original, ...and I've seen them in 1st gen's, ...they look fine.
Just to check, ...I just did an Ebay search "81 Camaro steering wheel", ...here's one:
http://cgi.ebay.com/ebaymotors/1978...704QQitemZ270100333528QQrdZ1QQsspagenameZWDVW
(I do NOT know this seller, ...simply posting this link as an example.)
Again, ...those wheels were used MANY years, ...look around, you should be able to find one or about $50.