Depends what size the hole is? what brand of wheel? couple of brands made hurricanes and also replica ones, also vectras.
I have been trying to find 68mm Chevoit Centre caps for torana hotwire wheels for a couple of years!! and then 2 sets in 2 days on Flea bay.
Must admit iam looking for a set of 14X8 hurricane or hotwires for my wb at the moment.