The cluster is out, you won't believe what I found

About speedometers, there are no sources for new replacement parts. About speedometer repair shops, They will have a lathe, tooling, and materials to make tiny naval bronze bushings, etc., ( very rare ), or a stockpile of good used and NOS instruments to take said parts from.
Although the majority of those parts are identical in a vast number of instruments, their stockpiles have depleted. THIS is another of the reasons I quit.
Bottom line.. If you can find a good used speedometer, buy it and get the rest of its life from it.