For a vintage project I am looking for I'll call a throttle butterfly plate, it is used on (I think) Scat VW's. This pic is of the one I have, and I am looking for the one for the other side. But it can be another one of these as well. The throttle plates are 2" diameter, and the throat spacing is 4 11/16" on center. If anyone can advise me on the manufacturer I would be most grateful.