Something I forgot to ask - if using these plasma dial mats, would you need to fit over the top of the existing dial mats?
Asking due to the raised parts of the ST clocks I have as can see that causing a bit of a problem.
Or could you just get rid of it and fit the new mats?
For some obvious reasons you would remove the existing dials faces before fitting new ones 
I’ll post up some links that might be useful to you.
Seeing you said you had ST clocks I thought you might have changed them already, but then I looked back and saw you still have bog standard dial faces.
Edited by raynkar, 29 January 2021 - 10:55 PM.