I tried this in the interior forum but got no response so I figgered I turn to the numbers guys. I found these (http://www.chevelles.com/showroom/DaDon/wheels.jpg) while cleaning. There is a Chevelle center cap but I'm not sure it actually goes with either wheel. The one with the horn buttons on the chrome spokes (on the right) has a number of 6 9745764. The one with the solid chrome spokes has a number of 20 9745758. Can anyone tell me what these wheels are out of?