Joe Vega (azchevs) had advertised some off an early seventies Monte Carlo a while back. I may? have a single, (15 x 7 early seventies) if you find three. Frankly the best source might be a '77-'90 B car with NON fleet suspension so it will have a 4 3/4" wheel bolt pattern. Not sure if the "tabs" were still on rims at that point though, in order to snap on "poverty" caps.