I've got a set of 1992 Z28 wheels that came with the 3rd gen I bought. They are not pretty, but they seem to work. There is some curb damage on them (one has a slightly bent bead on the outside that I can see, but they hold air and feel round to drive and autocross on them). The other 3 seem to be "worn", but round. These are just what one of the CMC guys need for spare wheels. I can bring them to the NASA Nationals at Mid Ohio this year and drop them to you, or send them back with one of your friends (if you know someone who's going and they have space and don't mind).

$100 (they'll probably include what's left of a set of street tires by that time).