1971 ( 340 ) Block & Crank obtained !

sireland67 said

Brake cylinder dingleberry, I have not seen one of them before.
The brake hones that I have seen are the three stone style.

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Just search EBay. I like the 320 or 400 grit. They just do a cleanup with minimal metal removal. Search "ball hone" for a 1" diameter. That's what I use.