In search of donor tachs for XJ650RJC

good condition instruments for older bikes are just as rare as rust free gas tanks.
The 82 XJ650RJC Seca had very low numbers to begin with, spare tachs are just NA
I replaced the original tach on my sidecar Seca as it quit working.
The replacement was not quite as nice - typical sun fading.
Anyway I was contemplating what donors would work and I came across what I think is a 900 Seca instrument panel
The tach looks like it would fit.


I'm pretty sure Yamaha never mounted their instruments like this

If all the Yamahas of that era are basically the same then maybe potential donors are many
They did seem to use the same dia face on a lot of bikes, Viragos to but they are white face and low redline