Question for all of you:

I have a '64 Olds Cutlass with a Rochester 4GC that I'm restoring after an engine fire. There's a small plastic disc that connects to the linkage, which activates the micro-switch on the slow idle assembly. When the petal is lowered, the disc moves away. I'm enclosing a picture of the linkage, with a circle around the disc (in red).

Question: Does anyone know what this piece is called and does anyone know if a replacement is available? I'm thinking of just making one, but obviously, if one's available, I would rather just buy it for the exact fit.

Thanks for any help!
Bill