Any Magnum 500's on a blue dart?

I don't doubt that a person told you the made small bolt Magnum 500 wheels. What I do doubt , is they would pay for the new stamping to make the wheel center in small bolt and make a brand new , smaller sized center cap , for the wheel , that will have a very small selling possibility. Also they would have to make a new retainer for the backside of the wheel center cap.
I had new steel wheel centers stamped for the 10 inch dogdish cap wheels and it's not cheap , believe me on that

Frank