As far as I know, unless you can contact suzuki themselves and ask them if they have the forging/machining information for those wheels from that year, the only way to find out if they are solid aluminum, is to cut a piece out of one of them and send them off to be analyzed.
I would maybe take a chance and just try it, unless you would rather spend the money on some new rims flat out.
I would maybe take a chance and just try it, unless you would rather spend the money on some new rims flat out.